prior art : CAFC Alert

Prior art can show what the claims would mean to those skilled in the art

Sung-Hoon Kim | December 5, 2012

ArcelorMittal v. AK Steel Corp.

November 30, 2012

Panel: Dyk, Clevenger, and Wallach.  Opinion by Dyk.

Summary:

The U.S. District Court for the District of Delaware held that defendants AK Steel did not infringe plaintiffs ArcelorMittal’s U.S. Patent No. 6,296,805 (the ‘805 patent), and that the asserted claims were invalid as anticipated and obvious based on a jury verdict.

ArcelorMittal appealed the district court’s decision.  On appeal, the CAFC upheld the district court’s claim construction in part and reverse it in part.  With regard to anticipation, the CAFC reversed the jury’s verdict of anticipation.  With regard to obviousness, the CAFC held that a new trial is required because the district court’s claim construction error prevented the jury from properly considering ArcelorMittal’s evidence of commercial success.

미국 델라웨어주 연방지방법원 (U.S. District Court for the District of Delaware)은 원고 (ArcelorMittal)가 피고 (AK Steel)를 상대로 낸 특허 침해 소송에서 원고의 특허 (U.S. Patent No. 6,296,805)가 예견가능성 (anticipation) 및 자명성 (obviousness) 기준을 통과하지 못하였다는 배심원의 판단을 바탕으로 피고가 원고의 특허를 침해하지 않았다고 판결하였다.

이에 불복하여 원고는 연방항소법원 (U.S. Court of Appeals for the Federal Circuit)에서 상고 (appeal) 하였으며, 연방항소법원은 지방법원의 청구항 해석 (claim construction)에 대해 일정 부분은 확인하였으나, 나머지 부분은 번복하였다.

예견가능성과 관련하여 연방항소법원은 배심원의 예견가능성 판단과 다른 결정을 내렸다.

자명성과 관련해서는 연방지방법원의 잘못된 청구항 해석으로 인하여 배심원이 원고의 상업적 성공 (commercial success) 증거를 고려하지 않았기때문에 재심 (new trial)이 필요하다고 판결하였다.


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Like prior art patents, potentially anticipatory non-patent printed publications are presumed to be enabling

Cindy Chen | October 5, 2012

In re Antor Media Corporation

July 27, 2012

Panel: Rader, Lourie and Bryson. Opinion by Lourie.

Summary

Antor Media Corp. appeals from the decision of the Board of Patent Appeals and Interferences rejecting on reexamination the claims of its patent as anticipated and obvious over four prior art references.  The prior art references include three printed publications and one U.S. patent.  The Board found that two of the printed publications anticipated the claims in Antor’s patent. Here, Antor argues that since the printed publications are not enabling, they could not have anticipated the claims. Antor further argues that unlike prior art patents, prior art printed publications are not presumptively enabling.  The principal issue on appeal is therefore whether the presumption that prior art patents are enabling can be logically extended to printed publications. The Federal Circuit answers that it can, holding that a prior art printed publication cited by an examiner is presumptively enabling barring any showing to the contrary by a patent applicant or patentee.


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