Department profile
Quinn Emanuel Urquhart & Sullivan, LLP

Intellectual Property: Patent Litigation

USA Guide 2026 : California

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Quinn Emanuel Urquhart & Sullivan, LLP

Rankings

Chambers Review

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Intellectual Property: Patent Litigation - California

Band 1

What the Team is Known For
Quinn Emanuel is a leading practice for complex and highly publicized patent infringement disputes, particularly in the hi-tech space. The firm is highlighted for its courtroom advocacy, including in cases involving design and standard-essential patents. The group is adept at PTAB, ITC and appellate proceedings. It also provides skilled counsel for contentious trademark matters and for cases arising from misappropriation of trade secrets allegations. The team offers notable capabilities assisting with trade dress, copyright and inventorship litigation.
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Work Highlights

Provided by Chambers

  • Quinn Emmanuel represented JUUL Labs in an ITC investigation resulting in an exclusion order barring a competitor from importing products found to infringe four JUUL patents.

Strengths

Provided by Chambers

  • Quinn Emmanuel is able to handle large, multi-continent and multi-venue matters and delivers critical tactical results across a broader litigation strategy. The team is thorough, creative, disciplined, efficient and highly experienced in all aspects of litigation.

    Intellectual Property: Patent Litigation respondentUSA

  • Quinn Emanuel is one of the top law firms in IP litigation in the United States.

    Intellectual Property: Patent Litigation respondentUSA

  • Quinn Emanuel is always responsive and treats each matter with a high degree of care.

    Intellectual Property: Patent Litigation respondentUSA

Notable Practitioners

Provided by Chambers

  • Sean Pak
    Sean Pak

    Sean Pak

    Sean Pak frequently represents both plaintiffs and defendants in numerous district courts and before the ITC in a wide variety of IP disputes.

    • Sean is a very strong lawyer.

      Intellectual Property: Patent Litigation respondentUSA

    • Sean Pak is very smart, technically and legally.

      Intellectual Property: Patent Litigation respondentUSA
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  • Margret Caruso
    Margret Caruso

    Margret Caruso

    Margret Caruso chairs the firm's trademark and copyright group and is regularly sought out by both plaintiffs and defendants to litigate complex IP disputes.
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  • Kevin Johnson
    Kevin Johnson

    Kevin Johnson

    Kevin Johnson draws on his background in electrical engineering to represent technology companies of all sizes in intellectual property disputes, including litigation relating to copyright and licensing, trade secrets and patent infringement.
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Ranked Individuals at Quinn Emanuel Urquhart & Sullivan, LLP (3)

California

  • Profile image of Kevin Johnson

    Kevin Johnson

    Intellectual Property: Patent Litigation

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  • Profile image of Margret Caruso

    Margret Caruso

    Intellectual Property: Trademark, Copyright & Trade Secrets

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