Department profile
Jones Day

Intellectual Property: Patent Prosecution

USA Guide 2026 : California

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Jones Day

Rankings

Chambers Review

Provided by Chambers

Intellectual Property: Patent Prosecution - California

Band 1

What the Team is Known For
Jones Day is a leading name for IP portfolio management in the life sciences space, especially in biotechnology. The firm is adept at patent prosecution and IP transactions, and also assists clients with patent, copyright and trade secrets disputes. The team is skilled at handling post-grant reviews at the PTAB, often acting for pharmaceutical and hi-tech clients.
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Work Highlights

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  • Jones Day serves as lead counsel to Agensys, an affiliate of Astellas, on global patent portfolio strategy for monoclonal antibody and ADC cancer therapies.

Strengths

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  • In complex chemical matters, Jones Day is highly experienced and effective, delivering outcomes I am very satisfied with.

    Intellectual Property: Patent Prosecution respondentUSA

  • Jones Day handles the most important IP assets for my company, providing sound advice on how best to protect those assets, rather than just mechanically prosecuting patent applications.

    Intellectual Property: Patent Prosecution respondentUSA

  • Jones Day's depth and breadth in intellectual property is impressive. They combine strong technical, scientific and legal expertise.

    Intellectual Property: Patent Prosecution respondentUSA

  • Jones Day is the best at client service across the board. They stick to budgets, staff teams rightly and ensure that matters do not balloon out of control. They are also very pragmatic and business‑minded.

    Intellectual Property: Patent Prosecution respondentUSA

  • Jones Day provides excellent litigation strategy and attention to detail in intellectual property.

    Intellectual Property: Patent Prosecution respondentUSA

Notable Practitioners

Provided by Chambers

  • Anthony M. Insogna
    Anthony M. Insogna

    Anthony M. Insogna

    Anthony Insogna frequently handles patent enforcement and defense, due diligence and portfolio strategy for life sciences clients. He also has experience before the PTAB.

    • Anthony Insogna is knowledgeable and a strategic thinker.

      Intellectual Property: Patent Prosecution respondentUSA

    • Anthony Insogna is my go-to attorney for all things related to our IP portfolio. He is one of the absolute best in this business.

      Intellectual Property: Patent Prosecution respondentUSA
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  • Edward Reines
    Edward Reines

    Edward Reines

    Edward Reines has extensive experience in litigating life sciences and technology IP disputes across district courts and the Federal Circuit Court of Appeals.

    • Ed Reines is a terrific attorney. He has a tremendous amount of trial and appellate experience.

      Intellectual Property: Patent Prosecution respondentUSA

    • Edward Reines has outstanding client management skills.

      Intellectual Property: Patent Prosecution respondentUSA
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  • Tamera M Weisser
    Tamera M Weisser

    Tamera M Weisser

    Tamera Weisser co-leads Jones Day's global patent prosecution group. She represents clients on patent prosecution, portfolio management and advises on their global patent strategies.

    • Tamera Weisser is sharp, meticulous and enthusiastic. She understands client needs and provides sound advice.

      Intellectual Property: Patent Prosecution respondentUSA

    • Tamera Weisser is consistently high‑touch, accessible and reliable, providing clear next steps and proactive updates.

      Intellectual Property: Patent Prosecution respondentUSA
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  • Bing Liang
    Bing Liang

    Bing Liang

    Bing Liang is an experienced patent practitioner with significant technical expertise in the life sciences sector. She frequently advises clients on patent prosecution and preparation.

    • Bing Liang is a great lawyer to work with.

      Intellectual Property: Patent Prosecution respondentUSA

    • Bing Liang is an excellent attorney and provides a full range of services and consultation with regard to a very complex patent portfolio. She is extremely knowledgeable and responsive.

      Intellectual Property: Patent Prosecution respondentUSA

    • Bing Liang is an absolute joy to work with. She is extremely personable and also possesses a deep understanding of the intricacies involved in pharma and patent portfolio management.

      Intellectual Property: Patent Prosecution respondentUSA

    • Bing Liang is very responsive and provides insightful advice on the patent strategy.

      Intellectual Property: Patent Prosecution respondentUSA
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  • Derek Walter
    Derek Walter

    Derek Walter

    Derek Walter maintains a broad IP disputes practice, regularly litigating patent matters in district courts and before the ITC.

    • Derek has an excellent skill set.

      Intellectual Property: Patent Prosecution respondentUSA

    • Derek Walter focuses on winning. I want to work with him again.

      Intellectual Property: Patent Prosecution respondentUSA

    • Derek Walter is responsive and professional, and puts client needs front and center.

      Intellectual Property: Patent Prosecution respondentUSA
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  • Randy Kay
    Randy Kay

    Randy Kay

    Randy Kay is a noted litigator with broad expertise encompassing trade secrets and copyright disputes, among others. He acts for clients from a range of highly technical industries.

    • I think highly of Randy Kay.

      Intellectual Property: Patent Prosecution respondentUSA
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  • Andrea Weiss Jeffries
    Andrea Weiss Jeffries

    Andrea Weiss Jeffries

    Andrea Weiss Jeffries is recognized for her substantial expertise litigating high-stakes patent disputes for clients from highly technical industries.
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  • Greg Lanier
    Greg Lanier

    Greg Lanier

    Greg Lanier is an experienced litigator with an impressive track record in high-stakes patent disputes. He frequently represents clients from highly technical industries.

    • Greg Lanier conveys trust when you put him in front of a jury.

      Intellectual Property: Patent Prosecution respondentUSA

    • Greg's knowledge, expertise and ability to keep client goals in mind are great.

      Intellectual Property: Patent Prosecution respondentUSA
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Ranked Individuals at Jones Day (8)

California

  • Profile image of Edward Reines

    Edward Reines

    Intellectual Property: Patent Litigation

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  • Profile image of Andrea Weiss Jeffries

    Andrea Weiss Jeffries

    Intellectual Property: Patent Litigation

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  • Profile image of Anthony M. Insogna

    Anthony M. Insogna

    Intellectual Property: Patent Prosecution

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  • Profile image of Tamera M Weisser

    Tamera M Weisser

    Intellectual Property: Patent Prosecution

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  • Profile image of Randy Kay

    Randy Kay

    Intellectual Property: Trademark, Copyright & Trade Secrets

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