Presumption of validity attaches to all issued patents, even incorrectly issued patents
| July 5, 2012
Sciele Pharma Inc. v. Lupin Ltd.
July 2, 2012
Panel: Lourie, Prost, Moore. Opinion by Moore
Summary
Shionogi (new name for Sciele Pharma) obtained US Patent No. 6,866,866 (“the ‘866 patent”) which included broader claims that were intended to be cancelled in favor of narrower claims in response to a rejection. Shionogi brought suit against Lupin for infringement of the ‘866 patent including claims that were to be cancelled. Lupin began selling the alleged infringing product and Shionogi moved for a preliminary injunction. The District Court granted Shionogi’s request for preliminary injunction and Lupin appealed. On appeal, the CAFC stated that even though the ‘866 patent issued with the incorrect claims, the ‘866 patent nonetheless had a presumption of validity and that the clear and convincing evidentiary standard applied for invalidating the patent. The CAFC also stated that there is not a heightened standard just because references were considered by the PTO. With the proper clear and convincing evidentiary standard applied to the ‘866 patent, the CAFC stated that Lupin has raised a substantial question of invalidity, and thus, the preliminary injunction is vacated.
Tags: clear and convincing standard > enablement > injunction > obviousness > preliminary injunction > presumption of validity > validity
CAFC defines “common sense” and warns against impermissible hindsight
| June 6, 2012
Mintz and Jif-Pak Manufacturing v. Dietz & Watson and Package Concepts and Materials
May 30, 2012
Rader, Newman, Dyk. Opinion by Rader.
Summary
This case highlights the important point that obviousness cannot be established by vague and unsubstantiated reliance on “common sense.” Rather, Judge Rader defines the term “common sense” as “knowledge so basic that it certainly lies within the skill set of an ordinary artisan.” The CAFC also warns against hindsight due to defining the problem to be solved based on the solution found by the inventors. Furthermore, the CAFC reminds us that when references from a secondary technical field are used in a rejection, the person of ordinary skill in the art is not a person familiar merely with this secondary technical field, but rather a person familiar with at least the primary technical field.
Tags: common sense > obvious to try > obviousness
