PTAB’s Written Description Ruling Goes Up in Smoke as Federal Circuit Clarifies Requirements for Claim Ranges 

Rai Strategic Holdings, Inc. v. Philip Morris Products S.A. (Feb. 9, 2024) – On February 9, 2024, in Rai Strategy Holdings Inc. v. Philip Morris Products S.A., the Federal Circuit vacated the Patent Trial and Appeal Board’s (PTAB) finding that claimed ranges of length rendered Rai’s vape device claims invalid for lack of written description….
By: Irwin IP LLP
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