Professional Details

Daniel L. Weiss

Senior Attorney

Daniel is a litigator and trial attorney with more than 15 years of experience representing businesses and individuals in high-stakes, complex litigation.  He handles a wide-array of matters in various industries, with an emphasis in general and business litigation, class actions, crisis management, labor and employment, sports law, process safety management, international arbitrations and white-collar defense and investigation matters.  Daniel has litigated in federal, state and territorial courts throughout the United States, as well as before several arbitration organizations. Based on his deep substantive legal experience, he also provides strategic counsel and advice to clients about risk management, reputational risk, and document retention and e-discovery issues.

Daniel is known for his creative, thoughtful and zealous advocacy, and his sound judgment.  He provides a functional and practical approach to find real-world solutions for his clients, but is always prepared to litigate matters through trial and appeal to vindicate his clients’ interests.  Daniel has participated in more than 15 trials, arbitrations and administrative proceedings.

Daniel is a member of the American Bar Association’s Section of Litigation. He is also a member of the Association of Business Trial Lawyers, the Los Angeles County Bar Association and the Sports Lawyers Association. He served on the Board of Directors of the Valley Jewish Community Center and is a Regional Board Member for the Anti-Defamation League, where he was also the former chair of the Legal Advisory Committee.

Daniel earned a law degree in 2005 from the University of Southern California, where he was elected to the Order of the Coif and served as Executive Notes Editor of the Southern California Law Review.  He graduated magna cum laude in 2002 from the University of Arizona with a B.S. degree in Marketing. 

Before joining Theodora Oringher, Daniel was an Of Counsel at the international law firm of Gibson, Dunn, & Crutcher LLP.  He also served as a law clerk to the Honorable Virginia A. Phillips in the U.S. District Court, Central District of California, Riverside, from 2005 to 2006.

Daniel is married with three children.  He lives in the San Fernando Valley and enjoys coaching his daughters in softball and collecting sports memorabilia.   


Daniel co-authored the chapter on the Consumers Legal Remedies Act in California Civil Procedure Before Trial: Claims and Defenses (The Rutter Group). He also co-authored the White Collar Criminal Law chapter in the Chief Executive Legal Guide and the article “Corporate Miranda Warnings: Defining Your Role and Avoiding Pitfalls in Internal Company Investigations,” which appeared in the American Bar Association’s Litigation Journal.

Daniel has also published several articles in the Daily Journal, Law360 and other leading publications:  

  • NCAA under scrutiny in grant-in-aid cap antitrust litigation; 
  • International Skating Union v. European Commission: What could be more competitive than sport?;
  • Supreme Court needs to rethink NCAA ‘amateurism’;
  • Preparing For Surge In Virus-Related Whistleblower Claims
  • A World Without Sports – What Happens Now?
  • Playing Hardball 

Representative Matters

  • Represented a petroleum refining company in an administrative proceeding before the State of Washington Board of Industrial Insurance Appeals in connection with a state-OSHA citation alleging process safety management and other violations arising from an industrial incident involving fatalities.
  • Represented a professional athlete in an arbitration overturning a professional sports league’s suspension based on an allegation that he violated the league’s anti-doping rules by taking a prohibited substance.
  • Represented a petrochemical company in a jury trial in a breach of contract action arising from an industrial accident involving fatalities.
  • Achieved several unprecedented victories on behalf of an international retailer of luxury products in a highly contentious litigation arising from the unlawful award of a multimillion-dollar duty-free concession agreement.
  • Obtained summary judgment on behalf of a global financial institution in a class action with a potential exposure of over $400 million alleging a violation of Missouri’s second mortgage loan act.
  • Represented an Olympic athlete in his successful appeal before the Court of Arbitration for Sport challenging the international federation’s request that the athlete receive a lifetime ban, which allowed the athlete to compete and medal at both the 2012 and 2016 Summer Olympic Games.
  • Achieved a complete victory on all claims on behalf of a synagogue in a multi-day bench trial in Los Angeles Superior Court against former members who fraudulently filed documents with the secretary of state indicating they were the officers and directors of the synagogue and then converted the synagogue’s real property by obtaining a several hundred thousand dollar hard-money loan.
  • Obtained a complete dismissal with prejudice of an action against a synagogue following the commencement of a multi-day trial in Los Angeles Superior Court.