Glaser Weil Expands San Diego Office With Arrival of Renowned Litigator Joseph Leventhal

Firm News

Joseph Leventhal brings an impressive track record in general commercial litigation, representing clients across a variety of industries in class actions, intellectual property disputes, complex contract matters, employment lawsuits and white collar defense.

San Diego, March 4, 2024 — Glaser Weil announced today that Joseph Leventhal has joined the Firm as head of litigation for the San Diego office. With an impressive track record in litigation, public service and community leadership, Leventhal brings his wealth of experience to Glaser Weil’s thriving San Diego team.

Leventhal is renowned for his extensive trial experience in state and federal courts, representing clients across diverse industries. Noteworthy accomplishments include leading Milacron to victory in an eight-day federal jury trial, successfully defending against a $23 million breach of contract lawsuit and securing a counterclaim award. He also overturned sanctions against a global logistics company after an appeal to the 9th Circuit. Leventhal achieved a judgment in favor of a real estate developer and owners’ association, resolving claims of fraud, breach of contract and RICO, and securing attorneys’ fees. Additionally, he played a key role in a cybersecurity dispute, resulting in the minority member relinquishing interest and agreeing to a multiyear noncompetition agreement.

“Joe’s exceptional legal skills, leadership and commitment to community service perfectly align with Glaser Weil’s values, and we are delighted to welcome him to the Firm,” said Peter Weil, managing partner of Glaser Weil. “Joe’s arrival marks a significant step forward for our San Diego office and enhances our ability to provide top-tier legal services to clients in the region.”

Situated in the heart of downtown San Diego, Glaser Weil’s newest office has quickly grown since its establishment in 2022, attracting accomplished lawyers dedicated to providing elite trial representation.

“Glaser Weil’s premier reputation as a litigation powerhouse in Southern California and its expanding presence in San Diego drove my decision to join the Firm,” said Leventhal. “I look forward to collaborating with my new colleagues to serve our clients and expand our impact in the region.”

Both Emil Petrossian and Elizabeth Sperling, co-office managing partners of Glaser Weil’s San Diego office, shared their excitement about Leventhal’s arrival. Petrossian stated, “We are thrilled to welcome Joe to our team. His experience and leadership will play a pivotal role in our mission to build a go-to, gold standard litigation firm in San Diego.” Sperling added, “We look forward to all that’s ahead with this partnership.”

Leventhal is a leader who is actively involved in the legal and broader San Diego communities. He currently serves as a national director for the Federal Bar Association; holds positions on the Southern District of California’s Standing Committee on Discipline, the San Diego Regional Chamber of Commerce’s public policy committee, the board of directors of St. Vincent de Paul’s Village, and the national board of directors and the San Diego steering committee for Just the Beginning; and is a member of the Rancho Bernardo Rotary Club. He previously served as a commissioner on the City of San Diego Ethics Commission, among other organizations dedicated to community service and legal excellence.

Leventhal is the latest addition to Glaser Weil’s growing roster of talent, including Elizabeth Sperling, Jeff Joyner, Emil Petrossian and Marc Indeglia.

Prior to joining Glaser Weil, Leventhal was the managing partner of the San Diego office of a large national law firm. Earlier in his career, he served as deputy assistant to a former vice president of the United States. Leventhal received his J.D., cum laude, from Georgetown University Law Center and his B.A. from the University of California, San Diego.

For more information, please contact


Glaser Weil is a premier California law firm with national reach and outstanding experience and market-leading successes in litigation, corporate, intellectual property and real estate matters. We represent both corporations and individuals in their most significant cases and most transformative deals. Our approach is uniquely effective.

Related Attorneys

  • Joseph Leventhal
    Partner and Head of Litigation for the San Diego Office

Related Practices

Jump to Page

Necessary Cookies

Necessary cookies enable core functionality such as security, network management, and accessibility. You may disable these by changing your browser settings, but this may affect how the website functions.

Analytical Cookies

Analytical cookies help us improve our website by collecting and reporting information on its usage. We access and process information from these cookies at an aggregate level.