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Wilson Sonsini, Attorneys Honored in 2025 IAM Patent 1000
News Articles
May 30, 2025

On May 29, 2025, IAM 1000 recognized Wilson Sonsini in the 2025 edition of IAM Patent 1000. The guide honored the firm with three firm rankings and six Wilson Sonsini attorneys received individual recommendations in the rankings.

The publication highlighted the firm’s “diversely talented line-up” of patent-focused experts, corporate lawyers, technology transactions specialists, and litigators. James Heslin and Matthew Bresnahan are noted as being “standouts on the patent team, the former spearheading IP prosecution efforts I the medical device space and the latter leading a large group in San Diego that is dedicated to the life sciences.” John Wehrli and Ken Clark are recognized as “leading transactional lawyer[s] in the pharmaceutical and biotechnology industries” and James Yoon is honored among the “most experienced trial lawyers.”

Wilson Sonsini’s firm rankings include:

  • National: Recommended for Transactions
  • California: Highly-Recommended for Transactions
  • California: Bronze Ranking for Litigation

The recommended attorneys that received individual recognition include:

  • Matthew Bresnahan
  • Ken Clark
  • James Heslin
  • Michael Rosato
  • John Wehrli
  • James Yoon

The IAM research team conducts face-to-face and telephone interviews and exchanged correspondence over a five-month period with thousands of lawyers, attorneys, and their clients to gather market intelligence on the leading players in the field. Individuals qualify for a listing in the IAM Patent 1000 when they receive sufficient positive feedback from peers and clients with knowledge of their practice and the market within which they operate.

Click here to view the complete guide.

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