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Intellectual Property

Paul Hastings is recognized as one of the nation’s leading intellectual property litigation practices, representing clients in disputes that shape markets, protect transformative innovations, and determine the future of their businesses. With more than 120 lawyers globally, our IP group combines courtroom experience, technical depth, and commercial judgment to enforce and defend intellectual property rights across U.S. and international forums. Our dedicated Life Sciences IP and Technology IP practices routinely represent innovators in two of the global economy’s most competitive and rapidly evolving sectors.
 

Band 1 – Intellectual Property: PTAB (Nationwide), Patent (New York) and Litigation (D.C.), Chambers USA (2026)

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RECOGNITIONS

  • Band 1 – Intellectual Property: Patent Trial and Appeal Board (Nationwide)

    Chambers USA (2026)

  • Band 1 – Intellectual Property: Patent (New York) 

    Chambers USA (2026)

REPRESENTATIONS

  • Established infringement of three Botox-related patents on behalf of AbbVie/Allergan in a federal Delaware jury trial and obtained $56 million in damages based on a 27% reasonable royalty.

  • Secured a precedent-setting appellate ruling for AbbVie/Allergan in the nationally watched, industry-tracked Federal Circuit decision in Allergan v. MSN Laboratories, which protects first-filed, first-issued patents from obviousness-type double patenting challenges, and reversed the District Court’s finding that patents protecting AbbVie’s Viberzi drug product lacked written description support, earning “Impact Case of the Year” at both Managing IP’s and LMG Life Science’s 2025 Americas Awards.