With “High-Impact Heavy Trial Wins” and a “Deep Bench of Stars,” Hueston Hennigan Wins US Trial Firm of the Year
Hueston Hennigan Named a Law360 Trials Group of the Year

Douglas J.





  • Hon. Edward Rafeedie, U.S. District Court for the Central District of California


  • California
  • New York
  • United States Supreme Court
“He lives and breathes [his cases] ... really good strategic instincts.”
“Doug’s hallmark qualities are his unfailingly appropriate tone and ability to read the room, and his unerring command of the facts and law.”
“A spectacular lawyer” who shines on “tough cases.”
—Benchmark Litigation
“[He] strongly believes litigating cases with the client from the very beginning is a key to success ... creating a memorable story that resonates with the jury and even the court.”
—Daily Journal
“Doug is embedded with us for the long haul ... he takes the time to understand everything from our perspective.”

Described by clients to Chambers as “an exceptional attorney” who “has unbelievable credibility with judges and juries,” Doug Dixon navigates complex technological, regulatory, and business matters across multiple areas of the law.

Mr. Dixon’s practice spans a wide range of litigation in federal and state courts at the trial and appellate levels and before arbitral tribunals. He focuses on complex business litigation, intellectual property litigation, securities litigation, antitrust litigation, international arbitration, and other high-stakes commercial disputes.

Mr. Dixon has represented clients across a broad spectrum of industries, including Western Digital, Match Group, T-Mobile, Southern California Edison, ClearOne, Amgen, Allergan, Waste Management, and Masimo.

Mr. Dixon has been recognized as a national “Litigation Star” by Benchmark Litigation. Since 2018, Mr. Dixon has been consistently recognized in The Best Lawyers in America in the practice area of commercial litigation, a distinction extended to the top 5 percent of private practice lawyers nationwide as determined by their peers.

Before starting Hueston Hennigan, Mr. Dixon was an associate at Cravath, Swaine & Moore and Irell & Manella. During law school, he served as an editor for The Georgetown Law Journal.

In addition to his practice, Mr. Dixon serves on the boards of the Federal Bar Association of Orange County, the J. Reuben Clark Law Society – Orange County, and the Public Law Center, a pro bono organization that provides legal services to low-income and vulnerable residents of Orange County. He is also active in providing service in his community.


Secured complete defense verdict of no infringement and invalidity representing ClearOne Inc. as lead trial counsel in the District of Delaware in a case involving design patent for beamforming microphone arrays against Shure Incorporated. (See “Jury Says Microphone Co. Shure’s Patent Invalid After Trial,” Law360“ClearOne Beats Rival Microphone Maker’s Design Patent Claims,” Bloomberg).

Won a $25 million trial victory for Acorn Semi, LLC in a patent infringement case against Samsung relating to its semiconductor technology. (See “Samsung Hit With $25M Semiconductor IP Verdict In EDTX,” Law360).

Obtained summary judgment of non-infringement in favor of Amazon.com, Inc. against claims for patent infringement brought by serial patent litigant MasterObjects, Inc. (See “Amazon Beats Patent Claims After Alsup ‘Misstated’ Its Motion,” Law360).

Representing Match Group against Google over its illegal monopolization and other anticompetitive behavior in the distribution of mobile apps and processing of in-app purchases. (See “Match Accuses Google Of ‘Extortionate’ Fees In Antitrust Suit,” Law360).

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Representing Southern California Edison and Edison International in litigation arising out of the 2017 Thomas Fire, the 2018 Montecito mudslides, and the 2018 Woolsey Fire.

Secured a declination from the California Department of Justice for Southern California Edison in connection with the 2018 Woolsey Fire that burned in Los Angeles and Ventura Counties.

Defending PacifiCorp against numerous lawsuits in multiple jurisdictions across Oregon and California arising out of the 2020 Labor Day Fires. The fires burned over 500,000 acres across at least five counties in Oregon and California and allegedly destroyed over 2,000 structures. Our roles include defense of all civil litigation and consultation and engagement with regulatory and investigatory agencies.

Defending NV Energy in lawsuits arising out of the Pinehaven Fire in Reno, Nevada.

Representing a leading social media company with respect to antitrust issues in the app ecosystem.

Defended Masimo Corp., a leading global medical technology company, in cases in the U.S. and China against claims of monopolization of the pulse oximeter monitor market, conspiracy to monopolize, tying, and related antitrust issues.

Secured a victory for BlackBerry Corp. and BlackBerry Ltd. in civil extortion and unfair competition claims leveled against it by MobileIron, forcing it to pay Blackberry’s legal fees and drop its lawsuit.

Obtained favorable settlement for a leading fitness technology company– including admissions of patent validity, intentional copying and an agreement to immediately cease using its patented leaderboard technology – after prevailing on an Alice challenge and virtually every other motion. (See “Peloton, Flywheel Settle Legal Disputes Over Fitness Bike Tech,” Wall Street Journal; “Peloton, Flywheel Agree To End Patent Fight Over Bike Tech,” Law360).

Represented Western Digital and its SanDisk subsidiaries in their widely publicized dispute with Toshiba over anti-transfer provisions in joint venture agreements governing the manufacture and development of NAND flash memory. The dispute encompassed multiple ICC arbitrations and litigation in the California trial and appellate courts, where SanDisk secured injunctive relief in aid of the arbitrations.

Represented Amgen in nationwide securities fraud class action and shareholder derivative matters alleging misrepresentations or omissions regarding the safety and marketing of several of Amgen’s most important drugs. The class action settled on favorable terms, and Mr. Dixon obtained the dismissal with prejudice of multiple shareholder derivative actions asserting that Allergan’s board members failed to prevent alleged off-label marketing violations.

Won a motion for preliminary injunction for ClearOne Inc. in a patent infringement suit, enjoining a large, multinational competitor’s manufacture, marketing, and sale of a competing, infringing product.

Represented T-Mobile in a series of patent infringement lawsuits asserting patents relating to various cellular communication standards in Texas federal court. All lawsuits settled on terms very favorable to T-Mobile.

Represented Sumner M. Redstone, chairman emeritus of Viacom and CBS, in shareholder derivative and class action matters in the Delaware Court of Chancery arising out of changes to Viacom’s board of directors and bylaws.

Served as trial counsel for Sumner M. Redstone in a successful defense against a high-profile challenge to Mr. Redstone’s mental competency.

Represented Sumner M. Redstone in connection with challenges to his decisions to reconstitute Viacom’s board of directors and amend Viacom’s bylaws.

Served as trial counsel for a patentee in a successful jury trial against LG Electronics in the U.S. District Court for the Eastern District of Texas involving user interface patents.

Represented T-Mobile in a patent infringement lawsuit involving near-field communications technology in mobile devices in New York federal court.

Represented Juniper Networks in a lawsuit brought by Implicit Networks Inc. alleging infringement of patents relating to a method for processing data in a computer network. Mr. Dixon helped secure a double summary judgment ruling that all asserted patent claims against Juniper were both invalid and not infringed.

Represented Hitachi Global Storage Technologies and Western Digital in a lawsuit accusing them of infringing patents relating to a method for developing diamond-like carbon films. Mr. Dixon was heavily involved in every aspect of the case, including the development of key arguments refuting the plaintiffs’ infringement and damages contentions. The case settled favorably before trial.

Defended a major medical device company against claims of inequitable conduct in Delaware federal court.

Obtained dismissal of all felony charges against a subsidiary of Waste Management after a four-year-long investigation and litigation involving allegations of conspiracy, false statements, and Clean Water Act violations.

Defended a banker in a lengthy insider trading investigation by the U.S. Securities and Exchange Commission. The investigation was terminated without action.

Served as trial counsel for a Fortune 500 company in a breach of contract lawsuit that culminated in a multiweek trial before an arbitrator involving complex property valuation methods.

Obtained a dismissal of putative consumer class action against Waste Management and others seeking hundreds of millions of dollars in damages relating to garbage collection operations in Los Angeles, California.


  • Top Intellectual Property Lawyers, Daily Journal (2022)
  • Leading Commercial Litigators, Daily Journal (2023)
  • Litigation Star, Benchmark Litigation (2021-present)
  • Recommended Lawyer for General Commercial Disputes, Legal 500
  • Future Star, Benchmark Litigation (2019, 2020)
  • The Best Lawyers in America (2018-present)
  • Named to the Southern California Rising Stars list (2014-2016, 2020, 2021)


Board of Directors, Public Law Center (2016-present)

Board of Directors, Federal Bar Association of Orange County (2016-present)

Board of Directors, Constitutional Rights Foundation (2015-2017)