Los Angeles

Since launching as Arnold & Porter’s first California office in 1991, our Los Angeles lawyers have offered comprehensive experience navigating the legal and business issues in Southern California for clients who are based here as well as those with commercial interests in the region. Our team frequently partners with colleagues from our two Northern California offices and throughout the firm to provide seamless service nationwide and around the globe.

Companies and executives turn to us as trusted advisors in product liability and consumer protection disputes; mass tort actions; environmental enforcement and regulatory proceedings; climate change and energy transition issues; intellectual property and technology litigation; life sciences investigations; and antitrust and trade regulation litigation. Our seasoned trial lawyers have an exceptional record of courtroom success, which means clients trust us to handle their most significant disputes. We are routinely chosen as lead counsel for high-profile matters across multiple practice areas.

Our lawyers are recognized as industry leaders by Chambers USA and Legal 500 and have been named by the Daily Journal among its “Top 100 Lawyers in California,” “Top Women of Influence: Attorneys,” and on its list of “Top Verdicts.” 

The Los Angeles office has a widely recognized pro bono practice that is dedicated to giving back to our community through handling matters involving the protection of voter rights; military sexual assault and veterans’ rights issues; labor trafficking; local sidewalk vending restrictions; tenants’ rights issues; First Amendment litigation; education rights; asylum matters; and counseling local small businesses and nonprofits. We were named “Pro Bono Law Firm of the Year” by Public Counsel, the largest pro bono law firm in the nation, and received its 2023 “Public Counsel Pro Bono Award.” Our commitment to pro bono has also has been recognized by the American Bar Association, the Daily Journal, and the HIV/AIDS Legal Service Alliance.