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Patent Litigation

  • A subject of extensive debate within the U.S. patent system has been the classification of “patent trolls” — most widely defined as individuals or companies that acquire patents solely for the purpose of assertion, often in cases without any merit, but which leverage the high cost of patent litigation defense to force small settlements.

    December 01, 2024Rob Maier
  • In September 2024, the Federal Circuit clarified the necessary qualifications for a technical expert to testify in a patent lawsuit, holding that while an expert must possess ordinary skill in the art, they need not have possessed such skill "at the time of the alleged invention."

    November 01, 2024Jim Day and Raven Quesenberry
  • Federal Circuit: Falsely Claiming That a Product Feature is Patented Can Give Rise to a False Advertising Claim Under the Lanham Act Federal Circuit: A Prior Decision in an IPR Does Not Collaterally Estop the Patentee in a Subsequent Litigation Where Invalidity Must be Proven by 'Clear and Convincing Evidence'

    November 01, 2024Jeff Ginsberg and Ryan J. Sheehan
  • The LJN Quarterly Update highlights some of the articles from the nine LJN Newsletters titles over the quarter. Articles include in-depth analysis and insights from lawyers and other practice area experts.

    October 01, 2024LJN Staff and Contributors
  • On August 13, the Federal Circuit issued a precedential ruling that reversed the District of Delaware's application of the Federal Circuit precedent in In re: Cellect to invalidate a claim in an earlier-filed parent application over admittedly patentably indistinct claims in later-filed (and earlier-expired) child patents. This decision has resolved some substantial questions about the application of obviousness-type double patenting that had been raised by last year's In re Cellect decision.

    September 01, 2024Maia H. Harris and Emma C. Mann
  • Federal Circuit: Affirms Preliminary Injunction on Cancer Assays Federal Circuit: Affirms Judgment of Unpatentability on the Pleadings for Claims Directed to Method of Assisting an Investigator in Conducting a Background Investigation

    September 01, 2024Matthew Weiss
  • The LJN Quarterly Update highlights some of the articles from the nine LJN Newsletters titles over the quarter. Articles include in-depth analysis and insights from lawyers and other practice area experts.

    July 24, 2024Steve Salkin
  • Federal Circuit Sitting en banc Overrules Long-standing Test for Assessing Obviousness of Design Patents and Adopts the Same Framework Established for Utility Patents Federal Circuit Affirms District Court's Grant of §285 Fees Request for Fees Incurred in Litigation and Denial of Fees Request for Fees Incurred In a Parallel IPR Proceeding

    July 01, 2024Jeff Ginsberg and Zhiqiang Liu