Category Archives: Written Description Requirements (WDR)

Biogen v. Mylan: When Does a Specification Fail to Describe a Newly-Presented Claim?

The disclosure requirements that will meet the written description requirement of s. 112(1) had a fairly mundane priority policing role prior to the expansion of the importance of the requirement in the biotech cases leading up to the en banc … Continue reading

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Nalproprion v. Actavis: WDR met by Substantially Equivalent Claim Elements(?)

In Nalproprion v Actavis, App. No. 2018-1221 (Fed. Cir., August 15, 2019) a divided panel of Judges Prost, Lourie and Wallach – Prost dissenting – affirmed the district court’s ruling that claim 11 of U.S. Pat. No. 8,916,195 met the … Continue reading

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Amgen v. Sanofi – Invalidation Without Representation?

The End of the “Newly Characterized Antigen” Rule for Antibody Claims In Amgen, Inc. v. Sanofi, Appeal no. 2017-1480 (Fed. Cir., Oct. 5, 2017) the Fed. Cir. panel reversed the district court’s finding that Amgen antibody patents 8,289,165 and 8859741 … Continue reading

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UCB v. Yeda R&D Co. – No “Safe Harbor” for Unamended Claims

UCB sued Yeda for a DJ of non-infringement of US Patent No. 6,090,923 [Appeal No. 2015-1957 (Fed. Cir. September 8, 2016)].The main claim in question was directed to “A monoclonal antibody which specifically binds a human cytotoxin [having X properties].” … Continue reading

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