"Recognized as one of the “Next Generation Partners” and Recommended Lawyers in Israel "
By The Legal 500 EMEA


Yair Ziv is partner in the Intellectual Property Practice Group of the firm. He has extensive experience representing clients before all levels of Israeli courts, as well as the Israel Patent Office, on patent infringement actions, oppositions, revocations, patent term extensions and the enforcement and protection of patents, whether as a domestic action or as part of a coordinated international enforcement action or proceedings challenging an IP right.

Yair represents major global and domestic pharmaceutical companies, generic manufacturers and technology companies. He also has particular expertise advising on the regulatory aspects of testing, marketing and selling pharmaceuticals and medical devices in Israel.

As a science graduate, Yair possesses the necessary background to understand both the technical, as well as the legal, issues facing the pharmaceutical and life sciences sectors. Together with other members of the Practice Group, he is involved in the legislative processes to amend Israel’s Patents Law and other regulations applicable to the pharmaceutical and life science sector.

Yair joined S. Horowitz & Co. in 2007, where he completed his internship and qualified as an Israeli advocate.


  • Co-author of the Israel chapter in: “Patent Protection for Second Medical Uses” (Wolters Kluwer, 2020).
  • Co-author of the Israel chapter in: “Study on the Legal Aspects of Supplementary Protection Certificates in the EU” (the European Commission, 2018).
  • Co-author of the Israel chapter in: “Patent Protection for Second Medical Uses” (Wolters Kluwer, September, 2016).
Languages: EnglishHebrew
Admissions: Israel Bar, 2008
Education: Hebrew University of Jerusalem, LL.B., cum laude and Dean’s List (2007)Hebrew University of Jerusalem, B.Sc. (Biology), Dean’s List (2004)


  • Advising Teva Pharmaceutical Industries Ltd. in numerous patent opposition proceedings and providing ongoing advice on various aspects of patents law, including freedom to operate opinions.
  • Representing Simplivia Healthcare Ltd. in patent infringement actions with respect to a drug mixing system.
  • Representing the Chemical, Pharmaceutical and Environmental Society of the Manufacturers’ Association of Israel in the drafting of IP legislation in Israel, including providing advice on proposed amendments to Israeli law on several patent issues.
  • Representing the Chemical, Pharmaceutical and Environmental Society of the Manufacturers’ Association of Israel in various cases involving issues of principle concerning patents and patent-term extensions, before all levels of Israeli courts and the Israel Patent Office.
  • Representing Smart Shooter Ltd. in several proceedings, including patent oppositions and trade secrets litigation.
  • Representing Dexcel Pharma Ltd. in high-value class actions brought against the company and other companies alleging the failure, on the part of Dexcel, to comply with regulatory requirements with respect to the contents of marketing materials.


  • IAM Patent 1000 2023 ranked Yair in the Bronze tier for Litigation:
    • Yair is an expert in the pharmaceutical industry and masterfully handles complex litigation and legislative efforts. Time and again, he provides each legal challenge with a suitable solution. Yair is strategically oriented, attentive and thorough. He inspires confidence in his clients and is trusted the handle the most crucial cases and initiatives.
  • The Legal 500 2023: Yair was recognized as a “Next Generation Partners”  in the field of Intellectual Property: Disputes.
  • The Legal 500 2022: Yair was recognized as one of the “Next Generation Partners”  in the practice areas of Intellectual Property: Disputes and ranked as a Key Lawyer in the field of Healthcare and Life Science:
    • With the professional and dedicated support of Yair Ziv, who possesses vast knowledge in patents law, drug regulation and life science, the S. Horowitz & Co. team provides valuable advice and representation before the Israeli Registrar of Patents and all levels of the Israeli civil courts.
  • The Legal 500 2021:  in the practice areas of Intellectual Property: Disputes, Yair Ziv was recognized as one of the “Next Generation Partners” and Recommended Lawyers in Israel, at junior partner level, for his work with pharmaceutical companies and technology companies. Yair has also been recognized as a Recommended Lawyer in the practice area of Healthcare and Life Sciences.
  • The Legal 500 2020: Yair Ziv was featured in the “Next Generation Partners” category in the intellectual property disputes field:
    • a standout younger partner.

Other Activities

  • Member of AIPPI – the International Association for the Protection of Intellectual Property.
  • Member of the Intellectual Property Committee of the Israel Bar Association.

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