New evidence submitted with a reply in IPR institution proceedings
WHDA Blogging Team | December 30, 2020
VidStream LLC v. Twitter, Inc.
November 25, 2020
Newman, O’Malley, and Taranto. Court opinion by Newman.
Summary
On appeals from the United States Patent and Trademark Office in IPR arising from two petitions filed by Twitter, the Federal Circuit affirmed the Board’s ruling that Bradford is prior art (printed publication) against the ’997 patent where the priority date of the ’997 patent is May 9, 2012 and a page of the copy of Bradford cited in Twitter’s petitions stated, in relevant parts, “Copyright © 2011 by Anselm Bradford and Paul Haine” and “Made in the USA Middletown, DE 13 December 2015.” The Federal Circuit affirmed the Board’s admission of new evidence regarding Bradford submitted by Twitter in reply (not included in petitions). The Federal Circuit also affirmed the Board’s rulings of unpatentability of claims 1– 35 of the ’997 patent over Bradford and other prior art references, in the two IPR decisions on appeal.
Details
I. background
U.S. Patent No. 9,083,997 (“the ’997 patent”), assigned to VidStream LLC, is directed to “Recording and Publishing Content on Social Media Websites.” The priority date of the ’997 patent is May 9, 2012.
Twitter filed two petitions for inter partes review (“IPR”), with method claims 1–19 of the ’997 patent in one petition, and medium and system claims 20–35 of the ’997 patent in the other petition. Twitter cited Bradford as the primary reference for both petitions, combined with other references.
With the petitions, Twitter filed copies of several pages of the Bradford book, and explained their relevance to the ’997 claims. Twitter also filed a Bradford copyright page that contains the following legend:
Copyright © 2011 by Anselm Bradford and Paul Haine
ISBN-13 (pbk): 978-1-4302-3861-4
ISBN-13 (electronic): 978-1-4302-3862-1
A page of the copy of Bradford cited in Twitter’s petitions also states:
Made in the USA
Middletown, DE
13 December 2015
VidStream, in its patent owner’s response, argued that Bradford is not an available reference because it was published December 13, 2015.
Twitter filed replies with additional documents, including (i) a copy of Bradford that was obtained from the Library of Congress, marked “Copyright © 2011” (this copy did not contain the “Made in the USA Middletown, DE 13 December 2015” legend); and (ii) a copy of Bradford’s Certificate of Registration that was obtained from the Copyright Office and contains following statements:
Effective date of registration: January 18, 2012
Date of 1st Publication: November 8, 2011
“This Certificate issued under the seal of the Copyright Office in accordance with title 17, United States Code, attests that registration has been made for the work identified below. The information on this certificate has been made a part of the Copyright Office records.”
Twitter also filed following declarations:
The Declaration of “an expert on library cataloging and classification,” Dr. Ingrid Hsieh-Yee, who declared that Bradford was available at the Library of Congress in 2011 with citing a Machine-Readable Cataloging (“MARC”) record that was created on August 25, 2011 by the book vendor, Baker & Taylor Incorporated Technical Services & Product Development, adopted by George Mason University, and modified by the Library of Congress on December 4, 2011.
the Declaration of attorney Raghan Bajaj, who stated that he compared the pages from the copy of Bradford submitted with the petitions, and the pages from the Library of Congress copy of Bradford, and that they are identical.
Twitter further filed copies of archived webpages from the Internet Archive, showing the Bradford book listed on a publicly accessible website (http://www.html5mastery.com/) bearing the website date November 28, 2011, and website pages dated December 6, 2011 showing the Bradford book available for purchase from Amazon in both an electronic Kindle Edition and in paperback.
VidStream filed a sur-reply challenging the timeliness and the probative value of the supplemental information submitted by Twitter.
The Patent Trial and Appeal Board (“PTAB” or “Board”) instituted the IPR petitions, found that Bradford was an available reference, and held claims 1–35 unpatentable in light of Bradford in combination with other cited references. Regarding Bradford, the Board discussed all the materials that were submitted, and found:
“Although no one piece of evidence definitively establishes Bradford’s public accessibility prior to May 9, 2012, we find that the evidence, viewed as a whole, sufficiently does so. In particular, we find the following evidence supports this finding: (1) Bradford’s front matter, including its copyright date and indicia that it was published by an established publisher (Exs. 1010, 1042, 2004); (2) the copyright registration for Bradford (Exs. 1015, 1041); (3) the archived Amazon webpage showing Bradford could be purchased on that website in December 2011 (Ex. 1016); and (4) Dr. Hsieh-Yee’s testimony showing creation and modification of MARC records for Bradford in 2011.”
VidStream timely appealed.
II. The Federal Circuit
The Federal Circuit unanimously affirmed all aspects of the Board’s holdings including Bradford being prior art (printed publication).
The critical issue on this appeal is whether Bradford was made available to the public before May 9, 2012, the priority date of the ’997 patent.
Admissibility of Evidence – PTAB Rules and Procedure
VidStream argued that Twitter was required to include with its petitions all the evidence on which it relies because the PTO’s Trial Guide for inter partes review requires that “[P]etitioner’s case-in-chief” must be made in the petition, and “Petitioner may not submit new evidence or argument in reply that it could have presented earlier.” Trial Practice Guide Update, United States Patent and Trademark Office 14–15 (Aug. 2018), https://www.uspto.gov/sites/de- fault/files/documents/2018_Revised_Trial_Practice_Guide. pdf.
Twitter responded that the information filed with its replies was appropriate in view of VidStream’s challenge to Bradford’s publication date, and that this practice is permitted by the PTAB rules and by precedent, which states: “[T]he petitioner in an inter partes review proceeding may introduce new evidence after the petition stage if the evidence is a legitimate reply to evidence introduced by the patent owner, or if it is used to document the knowledge that skilled artisans would bring to bear in reading the prior art identified as producing obviousness.” Anacor Pharm., Inc. v. Iancu, 889 F.3d 1372, 1380–81 (Fed. Cir. 2018).
The Federal Circuit sided with Twitter, concluding that the Board acted appropriately, for the Board permitted both sides to provide evidence concerning the reference date of the Bradford book, in pursuit of the correct answer.
The Bradford Publication Date
VidStream argued that, even if Twitter’s evidence submitted in reply were considered, the Board did not link the 2015 copy of Bradford with the evidence purporting to show publication in 2011, i.e., the date of copyright registration, the archival dates for the Amazon and other webpages, and the date the MARC records were created. VidStream argued that the Board did not “scrutiniz[e] whether those documents actually demonstrated that any version of Bradford was publicly accessible at that time.” VidStream states that Twitter did not meet its burden of showing that Bradford was accessible prior art.
Twitter responded that that the evidence established the identity of the pages of Bradford filed with the petitions and the pages from the copy of Bradford in the Library of Congress. Twitter explains that the copy “made” on December 13, 2015 was a reprint, for the 2015 copy has the same ISBN as the Library of Congress copy, as is consistent with a reprint, not a new edition.
After citing arguments of both parties, the Federal Circuit affirmed the Board’s ruling that Bradford is prior art against the ’997 patent because “[t]he evidence well supports the Board’s finding that Bradford was published and publicly accessible before the ’997 patent’s 2012 priority date.” There is no more explanation than this for the affirmance.
Obviousness Based on Bradford
The Federal Circuit affirmed the Board’s rulings of unpatentability of claims 1– 35 of the ’997 patent, in the two IPR decisions on appeal because VidStream did not challenge the Board’s decision of obviousness if Bradford is available as a reference.
Takeaway
· Although all relevant evidence should be submitted with an IPR petition, new evidence submitted with a reply may have chance to be admitted if the new evidence is a legitimate reply to the evidence introduced by a patent owner, or if it is used to document the knowledge that skilled artisans would bring to bear in reading the prior art identified as producing obviousness.
Box designs for dispensing wires and cables affirmed as functional, not registrable as trade dresses
WHDA Blogging Team | December 23, 2020
In re: Reelex Packaging Solution, Inc. (nonprecedential)
November 5, 2020
Moore, O’Malley, Taranto (Opinion by O’Malley)
Summary
In a nonprecedential opinion, the U.S. Court of Appeals for the Federal Circuit (the “CAFC”), affirmed the decision of the Trademark Trial and Appeal Board (the “TTAB”), upholding the examining attorney’s refusal to register two box designs for electric cables and wire as trade dresses on grounds that the designs are functional.
Details
Reelex filed two trade dress applications for coils of cables and wire in International Class 9.
The trade dress of Application Serial No. 87285383 (the ‘383 trade dress) is described as follows:
The mark consists of trade dress for a coil of cable or wire, the trade dress comprising a box having six sides, four sides being rectangular and two sides being substantially square, the substantially square sides both having a length of between 12 and 14 inches, the rectangular sides each having a length of between 12 and 14 inches and a width of between 7.5 and 9 inches and a ratio of width to length of between 60% and 70%, one, and only one rectangular side having a circular hole of between 0.75 and 1.00 inches in the exact middle of the side with a tube extending through the hole and through which the coil is dispensed from the package, the tube having an outer end extending beyond an outer surface of the rectangular side, and a collar extending around the outer end of the tube on the outer surface of the rectangular side of the package, and one square side having a line folding assembly bisecting the square side.
The trade dress of Application Serial No. 87285412 (the ‘412 trade dress) is described as follows:
The mark consists of trade dress for a coil of cable or wire, the trade dress comprising a box having six sides, four sides being rectangular and two sides being substantially square, the substantially square sides both having a length of between 13 and 21 inches, the rectangular sides each having a length of the same length of the square sides and a width of between 57% and 72% of the size of the length, one, and only one rectangular side having a circular hole of 4.00 inches in the exact middle of the side with a tube extending in the hole and through which the coil is dispensed from the package, one square side having a tongue and a groove at an edge adjacent the rectangular side having the circular opening, and the rectangular side having the circular opening having a tongue and a groove with the tongue of each respective side extending into the groove of each respective side at a corner therebetween.
The examining attorney refused the applications, finding the design of the boxes as being functional and non-distinctive. Further, the examining attorney found that the designs do not function as trademarks to indicate the source of the goods. On an appeal to the TTAB, the Board affirmed the examining attorney to register on the grounds of functionality and distinctiveness. Regarding functionality, the Board found that the features of these boxes – the rectangular shape, built-in handle for the ‘412 design, and dimensions of the boxes and the size and placement of the payout tubes and payout holes, are “clearly dictated by utilitarian concerns.” The Board also found that the payout holes and their position on the boxes allowed users easy access and twist-free dispensing.
While the Board found above to be sufficient evidence to uphold the functionality refusal, the Board went further to considered the following four factors from In re Morton-Norwich Products, Inc., 671 F.2d 1332 (CCPA 1982):
(1) the existence of a utility patent that discloses the utilitarian advantages of the design sought to be registered;
(2) advertising by the applicant that touts the utilitarian advantages of the design;
(3) facts pertaining to the availability of alternative designs; and
(4) facts pertaining to whether the design results from a comparatively simple or inexpensive method of manufacture.
- Existence of a utility patent
With regard to the first factor, Reelex submitted five utility patents relating to the applied-for marks:
- U.S. Patent No. 5,810,272 for a Snap-On Tube and Locking Collar for Guiding Filamentary Material Through a Wall Panel of a Container Containing Wound Filamentary Material;
- U.S. Patent No. 6,086,012 for Combined Fiber Containers and Payout Tube and Plastic Payout Tubes;
- U.S. Patent No. 6,341,741 for Molded Fiber and Plastic Tubes;
- U.S. Patent No. 4,160,533 for a Container with Octagonal Insert and Corner Payout; and
- U.S. Patent No. 7,156,334 for a Pay-Out Tube.
The Board found that the patents revealed several benefits of various features of the two boxes, weighing in favor of finding the designs of the two boxes to be functional.
- Advertising by the applicant
The second factor also weighed in favor of finding functionality. Reelex’s advertising materials repeatedly touted the utilitarian advantages of the boxes, which allow for dispensing of cable or wire without kinking or tangling. The boxes’ recyclability, shipping, and storage advantages were also being touted. The evidence weighed in favor of finding functionality.
- Alternative designs
The Board explained that in cases where patents and advertising demonstrate functionality of designs, there is no need to consider the availability of alternative designs. Nevertheless, the Board considered evidence submitted by Reelex, and found the evidence to be speculative and contradictory to its own advertising and patents. Therefore, the Board found the evidence to be unpersuasive.
- Comparatively simple or inexpensive method of manufacture
Regarding this last factor, the Board found no evidence of record regarding the cost or complexity of manufacturing the trade dress.
Considering and analyzing the case using the Morton-Norwich factors, the Board found the design of Reelex’s trade dress to be “essential to the use or purpose of the device” as used for “electric cable and wires.”
On appeal, Reelex argued that evidence shows that the trade dresses at issue “provide no real utilitarian advantage to the user.” In addition, Reelex argued that the Board erred in failing to consider evidence of alternative designs.
The CAFC found there to be substantial evidence to support the Board’s finding of multiple useful features in the design of the boxes, and these features were properly analyzed by the Board as a whole and in combination, and the Board did not improperly dissect the designs of the two trade dresses into discrete design features. The CAFC also found there to be sufficient evidence supporting the Board’s finding of functionality using the Morton-Norwich factors.
As to whether the Board considered Reelex’s evidence of alternative designs, the Board expressly considered Reelex’s evidence of alternative designs, and found the evidence to be both speculative and contradictory. For example, although the declaration submitted by Reelex stated that the shape of the package, as well as the shape, size, and location of the payout hole, were merely ornamental, Reelex’s utility patents repeatedly refer to the utilitarian advantages of the two box designs.
Therefore, the CAFC affirmed the decision of the Board, upholding the examining attorney’s refusal to register the two trade dress applications because they are functional.
Takeaway
- Functional designs cannot be registered as a trade dress. If a utility patent exists for a design, it is likely that the same design cannot also be protected as a trade dress.
- Note that there is an overlap in design patent and trade dress. Existence of a design patent does not preclude an applicant from filing a trademark application for the same design.
Printed Matter Challenge to Patent Eligiblity
John Kong | December 11, 2020
C R Bard Inc. v. AngioDynamics Inc.
November 10, 2020
Opinion by: Reyna, Schall, and Stoll (November 10, 2020).
Summary:
A vascular access port patent recited “identifiers” that were not given patentable weight under the printed matter doctrine. Printed matter constitutes an abstract idea under Alice step 1. Nevertheless, even though printed matter was not given any patentable weight and the claim was directed to printed matter under Alice step 1, the claims were found eligible under Alice step 2.
Background:
Bard sued AngioDynamics in the District of Delaware for infringing U.S. Patent Nos. 8,475,417, 8,545,460, and 8,805,478. One representative claim is claim 1 of the ‘417 patent:
An assembly for identifying a power injectable vascular access port, comprising:
a vascular access port comprising a body defining a cavity, a septum, and an outlet in communication with the cavity;
a first identifiable feature incorporated into the access port perceivable following subcutaneous implantation of the access port, the first feature identifying the access port as suitable for flowing fluid at a fluid flow rate of at least 1 milliliter per second through the access port;
a second identifiable feature incorporated into the access port perceivable following subcutaneous implantation of the access port, the second feature identifying the access port as suitable for accommodating a pressure within the cavity of at least 35 psi, wherein one of the first and second features is a radiographic marker perceivable via x-ray; and
a third identifiable feature separated from the subcutaneously implanted access port, the third feature confirming that the implanted access port is both suitable for flowing fluid at a rate of at least 1 milliliter per second through the access port and for accommodating a pressure within the cavity of at least 35 psi.
Vascular access ports are implanted underneath a patient’s skin to allow injection of fluid into the patient’s veins on a regular basis without needing to start a new intravenous line every time. Certain procedures, such as computed tomography (CT) imaging, required high pressure and high flow rate injections through such ports. However, traditional vascular access ports were used for low pressure and flow rates, and sometimes ruptured under high pressures and flow rates. FDA approval was eventually required for vascular access ports that were structurally suitable for power injections under high pressures and flow rates. To distinguish between FDA approved power injection ports versus traditional ports, Bard used the claimed radiographic marker (e.g., “CT” etched in titanium foil on the device) on its FDA approved power injection ports that could be detected during an x-ray scan typically performed at the start of a CT procedure. Additional identification mechanisms included small bumps that were palpable through the skin, and labeling on device packaging and items that can be carried by the patient (e.g., keychain, wristband, sticker). AngioDynamics also received FDA approval for its own power injection vascular access ports including a scalloped shaped identifier and a radiographic “CT” marker.
AngioDynamics raised ineligibility under §101 using the printed matter doctrine to nix patentable weight for the claimed identifiers in its motion to dismiss the complaint, its summary judgment motion, and later during the trial on an oral JMOL motion. In advance of the trial, the district court requested a report and recommendation from a magistrate judge regarding whether “radiographic letters” and “visually perceptible information” limitations in the claims were entitled patentable weight under the printed matter doctrine, as part of claim construction. The district court judge adopted the magistrate judge’s recommendations on the printed matter and ultimately granted AngioDynamic’s JMOL motion for ineligiblity.
The Printed Matter Doctrine:
This decision summarized the printed matter doctrine as follows:
- “printed matter” is not patentable subject matter
- the printed matter doctrine prohibits patenting printed matter unless it is “functionally related” to its “substrate,” which includes the structural elements of the claim
- while this doctrine started out with literally “printed” material, it has evolved over time to encompass “conveyance of information using any medium,” and “any information claimed for its communicative content.”
- “In evaluating the existence of a functional relationship, we have considered whether the printed matter merely informs people of the claimed information, or whether it instead interacts with the other elements of the claim to create a new functionality in a claimed device or to cause a specific action in a claimed process.”
Here, there is no dispute that the claims include printed matter (markers) “identifying” or “confirming” suitability of the port for high pressure or high flow rate. These markers inform people of the claimed information – suitability for high pressure or high flow rate.
Bard asserted that the markers provided a new functionality for the port to be “self-identifying.” This reasoning was rejected because mere “self-identification” being new functionality “would eviscerate our established case law that ‘simply adding new instructions to a known product’ does not create a functional relationship.” For instance, marking of meat and wooden boards with information concerning the product does not create a functional relationship between the printed information and the substrate.
Bard asserted that the printed matter is functionally related to the power injection step of the method claims because medical providers perform the power injection “based on” the markers. This reasoning was also rejected because the claims did not recite any such causal relationship.
Accordingly, the Federal Circuit held that the markers and the information conveyed by the markers, i.e., that the ports are suitable for power injection, is printed matter not entitled to patentable weight.
Nevertheless, despite the holding about printed matter not given patentable weight, the Federal Circuit still found the claims to be patent eligible under Alice step 2.
Before getting to Alice step 2, the Federal Circuit equates printed matter to an abstract idea, citing to an eighty year old decision “where the printed matter, is the sole feature of alleged novelty, it does not come within the purview of the statute, as it is merely an abstract idea, and, as such, not patentable.” The court further equates this to post-Alice decisions (Two-Way Media, Elec. Pwr Grp, Digitech) recognizing that “the mere conveyance of information that does not improve the functioning of the claimed technology is not patent eligible subject matter. under §101.” “We therefore hold that a claim may be found patent ineligible under §101 on the grounds that it is directed solely to non-functional printed matter and the claim contains no additional inventive concept.”
However, with regard to Alice step 2’s inventive concept, the court viewed “the focus of the claimed advance is not solely on the content of the information conveyed, but also on the means by which that information is conveyed” (i.e., via the radiographic marker). Bard admitted that use of radiographically identifiable markings on implantable medical devices was known in the prior art. Nevertheless, “[e]ven if the prior art asserted by AngioDynamics demonstrated that it would have been obvious to combine radiographic marking with the other claim elements, that evidence does not establish that radiographic marking was routine and conventional under Alice step two.” “AngioDynamics’ evidence is not sufficient to establish as a matter of law, at Alice step two, that the use of a radiographic marker, in the ‘ordered combination’ of elements claimed, was not an inventive concept.” Even with regard to the corresponding method claim, “while the FDA directed medical providers to verify a port’s suitability for power injection before using a port for that purpose, it did not require doing so via imaging of a radiographic marker…[t]here is no evidence in the record that such a step was routinely conducted in the prior art.”
Takeaways:
- The printed matter doctrine not only precludes patentable weight for §§102 and 103 inquiries, but also raises abstract idea issues under Alice step 1.
- This case also reminds us of the eligibility hurdles for data processing inventions, with Two-Way Media “concluding that claims directed to the sending and receiving of information were unpatentable as abstract where the steps did not lead to any ‘improvement in the functioning of the system;’” Elec. Pwr Grp “holding that claims directed to ‘a process of gathering and analyzing information of a specified content, then displaying the results, and not any particular assertedly inventive technology for performing those functions’ are directed to an abstract idea;” and Digitech stating that “data in its ethereal, non-physical form is simply information that does not fall under any of the categories of eligible subject matter under section 101.”
- For Alice step 2, this case exemplifies the high bar for establishing “routine and conventional.” Here, the patentee’s admission that radiographic marking on implanted medical devices is known in the prior art was not enough to establish “routine and conventional.” Even prior art that demonstrates the obviousness of combining radiographic marking with the other claim elements was also not enough to establish “routine and conventional.”
- For Alice step 2, this case may exemplify the breadth of what constitutes an inventive concept in “an ordered combination.” The court does not specify exactly what the “ordered combination” was here. Perhaps, the “significantly more” (beyond the abstract idea of the printed matter) could simply be the combination of a radiographic marker and a port.
Dependent Claims Cannot Broaden an Independent Claim from Which They Depend
Bo Xiao | December 4, 2020
Network-1 Technologies, Inc. v. Hewlett-Packard Company, Hewlett-Packard Enterprise Company
Before PROST, Chief Judge, NEWMAN and BRYSON, Circuit Judges.
Summary
The Federal Circuit reversed, in part, and affirmed, in part, the district court’s decision and ordered a new trial on infringement. Because the district court erred in construing one patent claim, the Federal Circuit concluded that the district court’s erroneous claim construction established prejudice towards Network-1. The Federal Circuit also affirmed the district court’s judgment that the dependent claims did not improperly broaden one of the asserted claims.
Background
Network-1 Technologies, Inc. (“Network-1”) owns U.S. Patent 6,218,930 (the ‘930 patent), entitled “Apparatus and Method for Remotely Powering Access Equipment over a 10/100 Switched Ethernet Network,” which sued Hewlett-Packard (“HP”) for infringement in the United States District Court for the Eastern District of Texas. The jury found the patent not infringed and invalid. But the district court granted Network-1’s motion for judgment as a matter of law (“JMOL”) on validity following post-trial motions.
Network-1 appealed the district court’s final judgment that HP does not infringe the ’930 patent, arguing the district court erred in its claim construction on “low level current” and “main power source.” HP cross-appealed the district court’s estoppel determination in raising certain validity challenges under 35 U.S.C. § 315(e)(2) based on HP’s joinder to an inter partes review (“IPR”) before the Patent Trial and Appeal Board (“the Board”). Also, HP argued that Network-1 improperly broadened claim 6 of the ’930 patent by adding two dependent claims 15 and 16.
Discussion
The ’930 patent discloses an apparatus and methods for allowing electronic devices to automatically determine if remote equipment is capable of accepting remote power over Ethernet. On appeal, the arguments on the alleged infringement are drawn towards claim 6 as follows.
6. Method for remotely powering access equipment in a data network, comprising,
providing a data node adapted for data switching, an access device adapted for data transmission, at least one data signaling pair connected between the data node and the access device and arranged to transmit data therebetween, a main power source connected to supply power to the data node, and a secondary power source arranged to supply power from the data node via said data signaling pair to the access device,
delivering a low level current from said main power source to the access device over said data signaling pair,
sensing a voltage level on the data signaling pair in response to the low level current, and
controlling power supplied by said secondary power source to said access device in response to a preselected condition of said voltage level.
Network-1 argued that the district court erroneously construed the claim terms “low level current” and “main power source” in claim 6. About “low level current,” the district court imposed both an upper bound (the current level cannot be sufficient to sustain start up) … and a lower bound (the current level must be sufficient to begin startup). Network-1 admitted that the term “low level current” describes current that cannot “sustain start up” but disagreed with the district court’s construction that the current has a lower bound at a level sufficient to begin start up.
The Federal Circuit reviewed the arguments and made it clear that “[T]he claims themselves provide substantial guidance as to the meaning of particular claim terms” and “the specification is the single best guide to the meaning of a disputed term.” It has been pointed out that the claim phrase is not limited to the word “low,” and the claim construction analysis should not end just because one reference point has been identified. The Federal Circuit further explained that the claim phrase “low level current” does not preclude a lower bound by using the word “low.” Rather, in the same way the phrase should be construed to give meaning to the term “low,” the phrase must also be construed to give meaning to the term “current.” The term “current” necessarily requires some flow of electric charge because “[i]f there is no flow, there is no ‘current.’” Therefore, the Federal Circuit confirms that the district court correctly construed the phrase “low level current.”
However, the Federal Circuit held that the district court erred in its construction of “main power source” in the patent claims resulting in prejudice towards Network-1. The district court construed “main power source” as “a DC power source,” thereby excluding AC power sources from its construction. The Federal Circuit concluded that the correct construction of “main power source” includes both AC and DC power sources. Although HP argued that the erroneous claim construction was harmless and no accused product meets the claim limitation “delivering a low level current from said main power source,” the Federal Circuit confirmed that Network-1 has established that the claim construction prejudiced it because the evidence shows that HP relied on the district court’s erroneous construction for its argument. The district court’s erroneous claim construction of “main power source” is entitled Network-1 to a new trial on infringement.
On cross-appeal, HP argued that the district court erred in concluding that HP was statutorily estopped from raising certain invalidity. In this case, HP did not petition for IPR but relied on the joinder exception to the time bar under § 315(b). HP first filed a motion to join the Avaya IPR with a petition requesting review based on grounds not already instituted. The Board correctly denied HP’s first request but later granted HP’s second joinder request, which petitioned for only the two grounds already instituted. The Federal Circuit reasoned that “HP, however, was not estopped from raising other invalidity challenges against those claims because, as a joining party, HP could not have raised with its joinder any additional invalidity challenges.” A party is only estopped from challenging claims in the final written decision based on the grounds that it “raised or reasonably could have raised” during the inter partes review (IPR). Hence, the Federal Circuit ruled that HP was not statutorily estopped from challenging the asserted claims of the ’930 patent, which were not raised in the IPR and could not have reasonably been raised by HP.
Prior to reexamination, claim 6 of the ’930 patent was construed to require the “secondary power source” to be physically separate from the “main power source.” But during the reexamination, Network-1 added claims 15 and 16, which depended from claim 6 and respectively added the limitations that the secondary power source “is the same source of power” and “is the same physical device” as the main power source. HP argued that claim 6 and the other asserted claims are invalid under 35 U.S.C. § 305 because Network-1 improperly broadened claim 6 by adding claim 15 and 16 in the reexamination. However, the Federal Circuit does not agree that claim 6 is invalid for improper broadening based on the addition of claims 15 and 16. First, a patentee is not permitted to enlarge the scope of a patent claim during reexamination. The broadening inquiry involves two steps: (1) analyzing the scope of the claim prior to reexamination and (2) comparing it with the scope of the claim subsequent to reexamination. The Federal Circuit’s broadening inquiry begins and ends with claim 6. Because claim 6 was not itself amended, the scope of claim 6 was not changed as a result of the reexamination. Where the scope of claim 6 has not changed, there has not been improper claim broadening. Dependent claims cannot broaden an independent claim from which they depend. Accordingly, the Federal Circuit affirmed the district court’s conclusion that claim 6 and the other asserted claims are not invalid due to improper claim broadening.
Takeaway
- A party is only estopped from challenging claims in the final written decision based on grounds that it “raised or reasonably could have raised” during the inter partes review (IPR).
- Dependent claims cannot broaden an independent claim from which they depend.
