Wilson Sonsini Goodrich & Rosati’s trademark and advertising practice has been ranked among the leading firms in the 2026 edition of World Trademark Review’s WTR 1000, an annual guide that showcases the top trademark professionals across key jurisdictions worldwide. The firm is recognized as a leader in both California and Washington.

In Washington, the practice is led by partners Aaron Hendelman and Alyssa Worsham, who have garnered praise for their “business acumen and expertise in brand protection.” Alyssa is highlighted as one of the best IP practitioners in the U.S., noted for her skill in handling complex cases and her deep understanding of her clients' sectors. Aaron is recognized for his “smart and direct” approach, with commendations for handling his cases with “immense care and devotion.”

With partner Christine Au-Yeung at the helm in California, Wilson Sonsini has established itself as a “a magnet for innovators and brand-first companies seeking elite IP counsel.” Sources commend Christine for her expertise in all aspects of trademark prosecution and for providing “thoughtful, strategic advice.”

The WTR 1000 is the only standalone publication that exclusively recommends individual practitioners and their firms based on trademark expertise, identifying the leading players in more than 80 jurisdictions globally.

Click here to view the full 2026 edition of World Trademark Review 1000: The World's Leading Trademark Professionals.