News & Analysis as of

Obviousness Extrinsic Evidence

McDermott Will & Emery

Bad Connection: Claim Construction Argument without Explanation Given No Weight

McDermott Will & Emery on

The US Court of Appeals for the Federal Circuit affirmed a Patent Trial & Appeal Board (Board) obviousness decision after finding that the patent owner failed to explain how its cited extrinsic evidence supported its proposed...more

McDonnell Boehnen Hulbert & Berghoff LLP

ImmunoGen, Inc. v. Hirshfeld (Fed. Cir. 2022)

One of the casualties of the Leahy-Smith America Invents Act in 2012 was 35 U.S.C. § 145, which had provided recourse to U.S. District Courts for U.S. patent applicants disgruntled with a determination of unpatentability...more

Katten Muchin Rosenman LLP

Federal Circuit Issues Opinion on "Inherent Obviousness" in Patent Claim, Invalidating Orange Book Listed Pharma Patent

Key Points - Federal Circuit issued precedential opinion in Hospira Inc. v. Fresenius Kabi USA, LLC that affirmed obviousness of a liquid drug patent claim, encouraging future patent challengers to raise the issue of...more

Knobbe Martens

Non-Prior Art Evidence May Be Used to Prove Inherency

Knobbe Martens on

HOSPIRA, INC. V. FRESENIUS KABI USA, LLC - Before Lourie, Dyk, and Moore.  Appeal from the U.S. District Court for the Northern District of Illinois. Summary:  Evidence of the properties of claimed embodiments may be...more

Knobbe Martens

Federal Circuit Further Expands the Role of Factual Questions in Section 101 Analysis

Knobbe Martens on

In the recent decision of Data Engine Technologies LLC v. Google LLC, the Federal Circuit may have expanded how factual questions underpin subject matter eligibility analysis under Section 101. Since the two-part eligibility...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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