News & Analysis as of

Patent Infringement CAFC Claim Construction

Knobbe Martens

Hard to Stomach: Things You Say to Prosecute a Patent Can and Will Be Used Against You

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AZURITY PHARMACEUTICALS, INC. v. ALKEM LABORATORIES LTD. Before Murphy, Moore, and Chen. Appeal from the United States District Court for the District of Delaware. Arguments and amendments made during prosecution of a parent...more

MoFo Life Sciences

In Patent Prosecution, You Have the Right to Remain Silent. Anything You Say Can and Will Be Used Against You in the Court of Law

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While a Miranda warning isn’t given prior to starting substantive examination, perhaps it should be. In Azurity Pharmaceuticals, Inc. v. Alkem Laboratories, Ltd., a precedential decision issued on April 8, 2025, the Federal...more

Haug Partners LLP

Federal Circuit Affirms Presumption of Separateness in Regeneron Pharmaceuticals, Inc. v. Mylan Pharmaceuticals Inc. et al., C.A....

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In a formulation claim, if elements are listed separately, does this necessarily entail that those elements are “separate and distinct components”?  This was the question before the district court in Regeneron...more

Baker Botts L.L.P.

First Quarter 2025 Federal Circuit Law Snapshot

Baker Botts L.L.P. on

Since serving as a Federal Circuit clerk, Michael Hawes has monitored that court's precedential opinions and prepares a deeply outlined index by subject matter (invalidity, infringement, claim construction, etc.) of relevant...more

McDermott Will & Emery

Impermissible Convoyed Sales Wash Away Damages Award

The US Court of Appeals for the Federal Circuit affirmed a district court’s finding of infringement but vacated its damages award because the award improperly included auxiliary products lacking any functional relationship to...more

McDermott Will & Emery

The Clear and Unmistakable Standard for Applying Prosecution Disclaimer

The US Court of Appeals for the Federal Circuit found that a district court misconstrued claim terms based on a misapplication of the clear and unequivocal disavowal standard and vacated its noninfringement decision. Maquet...more

Jones Day

Ho, Ho, No: CAFC Delivers Reversal, Vacatur, and Remand in Christmas Tree Row

Jones Day on

The Federal Circuit recently issued another decision in a longstanding dispute between Willis Electric Co. and Polygroup Ltd. involving two patents owned by Willis (U.S. Patent Nos. 8,454,186 and 8,454,187) directed to...more

International Lawyers Network

Can Design Patents Be Limiting in Enforcement?

Suppose that you have an invention disclosure for a design of an article that you want to protect?  When you review the invention disclosure, you notice that the design is ornamental, for example a pattern, on an article such...more

Troutman Pepper Locke

CAFC Affirms PTAB’s Decision That Printed Matter Doctrine Can Be Used In Claim Construction

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In an inter partes review proceeding, a challenger cannot raise patent-eligibility as a ground of invalidity. Rather, the invalidity grounds are limited to lack of novelty and obviousness. ...more

Troutman Pepper Locke

CAFC Finds Another PTAB Claim Construction Unreasonable and Again Reverses an Invalidity Holding

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In an inter partes review (IPR) proceeding, the meaning of terms used in challenged claims of an unexpired patent are given their broadest reasonable interpretation in light of the claim language and the specification. The...more

Foley & Lardner LLP

CAFC Finds ANDA Infringement Despite Differences Between FDA Labeling And Claim Language

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In a non-precedential decision issued in Braintree Labs., Inc. v. Breckenridge Pharmaceutical, Inc., the Federal Circuit reversed the district court’s grant of summary judgment of noninfringement in favor of Breckenridge, and...more

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