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D. Mass. Patent Litigation Update: April 2026 D. Mass. Patent Litigation Update: April 2026

Federal Circuit IP Blog

Federal Circuit Upholds Prosecution Laches in Ruling Against Gilbert Hyatt Federal Circuit Upholds Prosecution Laches in Ruling Against Gilbert Hyatt

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Beijing High Court Struck Down a Bad Faith Filer’s Laches and Acquiescence Defenses to Protect a Famous Mark Beijing High Court Struck Down a Bad Faith Filer’s Laches and Acquiescence Defenses to Protect a Famous Mark

Prosecution First Blog

If You Snooze, You Lose: Prosecution Laches as a Defense by the PTO If You Snooze, You Lose: Prosecution Laches as a Defense by the PTO

Federal Circuit IP Blog

Applicant’s Unreasonable Delays During Patent Prosecution Can Lead to Prosecution Laches Applicant’s Unreasonable Delays During Patent Prosecution Can Lead to Prosecution Laches

INCONTESTABLE® Blog

Ninth Circuit Finds That Disputed Material Facts Prevent Summary Judgment on Whole Foods’ Laches Defense Ninth Circuit Finds That Disputed Material Facts Prevent Summary Judgment on Whole Foods’ Laches Defense

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How Recent Appellate Decisions Have Changed the Landscape of Privilege Waiver How Recent Appellate Decisions Have Changed the Landscape of Privilege Waiver

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No Laches Defense of "Unreasonable Delay" for Patent Infringement Suits Brought Within Six-Year Limitation Period No Laches Defense of "Unreasonable Delay" for Patent Infringement Suits Brought Within Six-Year Limitation Period