Westerberg & Partners

Jonas Westerberg

Jonas Westerberg


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+46 766 170 919


I have 30 years’ experience as a lawyer and for approximately 25 years I have specialized in intellectual property disputes. I represent clients both in arbitration and before courts of law, with a special focus on patents, copyright and trade secrets.

Work highlights include: patent litigation relating to the active substances in, and formulations of, the pharmaceutical products Losec, Prozac and OxyContin; successfully representing a client in the first IP case passing the requirement of leave to appeal and certiorari to the Supreme Court since the restructuring of the Swedish IP court system in 2016; arbitration concerning scope and term of major multi-jurisdictional cross-licensing agreement; and defending the validity of a client’s infringed patent relating to large infrastructure projects. The latter resulted in one of the largest awards of damages in Swedish patent history. I have also represented a client in a dispute concerning electronic signatures with a value of SEK 7 billion.

Recent recognition includes:

Ranked by IAM Patent 1000 in band gold in Litigation with sources mentionning me as “[o]ne of the best litigators in Sweden and […], always one step ahead of the game”.

Recommended by Who's Who Legal in Patents, Life Sciences - Patent Litigation and Trademarks in their 2020 edition with peers describing me as a “very knowledgeable patent lawyer and foremost litigator” who possesses a “strong analytical ability and always provides well-balanced advice”.

Ranked in Chambers Global 2018 under Intellectual Property, mentioned as a "very experienced patent litigator. He provides solid, sensible advice, is service-minded and has a high level of commercial awareness."

Current and former positions include:

Member of the board and advisory board of EPLAW, member of the board of AIPPI Sweden, Head of IP at Lindahl Law firm.


Chapter on Sweden in “Secondary Medical Use, AIPPI 2nd Edition