Willenken and its partners Eileen Ahern, Paul Loh, Kenneth Trujillo-Jamison, and Jason Wilson are recognized in the 2025 edition of Benchmark Litigation, a leading guide that ranks elite litigation firms in North America for their excellence in litigation and client service.
In the 2025 Benchmark Litigation edition, Willenken advances to a “Highly Recommended” firm ranking for litigation and dispute resolution. Partners Eileen Ahern, Paul Loh, and Jason Wilson are each recognized as a “Litigation Star.” This ranking is reserved for lawyers who are consistently recommended as reputable and effective litigators by clients and peers. Partner Kenneth Trujillo-Jamison is ranked as a “Future Star.”
“Willenken prides itself on being 100% minority owned as well as its nimble structure that affords it the opportunity to flex its trial capabilities on a frequent basis.
The most emblematic example of the firm’s increased reach is its victory, as co-counsel, in Delaware Chancery Court: a Willenken team led by prolific trial lawyer Paul Loh and also composed of Jason Wilson, and Kenneth Trujillo-Jamison scored big for AbbVie in a long-running and hard-fought commercial case concerning the drug Lupron.
This drug was manufactured by Takeda, whose factory got shut down due to regulatory issues, causing a major shortage of Lupron. AbbVie sued for all the lost business, triumphing in March 2024 with a $500 million verdict.”
Benchmark Litigation
Clients spoke candidly to Benchmark Litigation researchers about their experience with the firm describing the firm as a litigation-specific shop that is noted for its “trial acumen with California-centric cases” and lauded for its “efficient staffing, effective strategies and excellent communications.” Clients characterize the firm’s attorneys as “excellent in terms of providing responsive, cost-efficient, and insightful services that are always geared toward obtaining the best result at the earliest juncture.”
See Benchmark Litigation’s full coverage of the firm here.
ABOUT BENCHMARK LITIGATION
Benchmark Litigation is the only independent guide focused exclusively on identifying and ranking leading litigation attorneys and firms at the local and national levels in North America. The ranking results are the culmination of a six-month research period during which researchers conduct extensive interviews with litigators and their clients. The researchers examine recent casework handled by the firms and ask sources to offer their professional opinions on litigators practicing within their state or national practice areas.
