News & Analysis as of

Ambiguous Patent Litigation Claim Construction

Smart & Biggar

Avoiding a finding of ambiguity and ensuring patent validity: the importance of a comprehensive disclosure and defining coined...

Smart & Biggar on

On June 7, 2024, the Federal Court issued its Judgment and Reasons in Tekna Plasma Systems Inc v AP&C Advanced Powders & Coatings Inc ( 2024 FC 871), finding all claims of the Defendant’s Canadian Patent No 3,003,502 (502...more

Schwabe, Williamson & Wyatt PC

Latest Federal Court Cases - November 2023

In re PersonalWeb Technologies LLC, Appeals Nos. 2021-1858, -1859, -1860 (Fed. Cir. Nov. 3, 2023) In this appeal from the United States District Court for the Northern District of California, the question before the...more

Fitch, Even, Tabin & Flannery LLP

Federal Circuit Looks to Expert Testimony to Construe Patent with Ambiguous Intrinsic Record

On December 15, in Uniloc 2017 LLC v. Netflix, Inc. (nonprecedential), the Federal Circuit affirmed a Patent Trial and Appeal Board (PTAB) determination that a claim of Uniloc’s U.S. 6,584,229 patent was unpatentable as...more

McDonnell Boehnen Hulbert & Berghoff LLP

News from Abroad: Canada's Federal Court Questions No File Wrapper Estoppel on Claim Construction

The Supreme Court of Canada in Free World Trust v Électro Santé Inc, 2000 SCC 66 rejected the use of extrinsic documents such as file wrappers (patent prosecution histories) for claim construction, on the basis that allowing...more

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