David H.Seidel


San Francisco + 1.415.875.5748

David Seidel is a litigator with significant experience representing clients in all manner of complex disputes. David's practice focuses on class actions and procedurally complex litigation, and he has litigated matters across a wide range of substantive legal areas in federal and state courts.

David's experience ranges from litigating federal court copyright claims and a toxic tort class action, to working on construction disputes in state court and on a unique arbitration proceeding concerning the placement of an initiative on the California ballot. Through the breadth of matters he has worked on, David has gained significant experience in all dimensions of litigation, including researching and analyzing complex legal issues, drafting pretrial motions, negotiating discovery disputes, preparing matters for summary judgment, and assisting at trial and arbitration. David served as a law clerk to Judge Jill A. Otake at the U.S. District Court for the District of Hawaii where he gained substantial experience in both civil and criminal matters.

David is committed to pro bono legal work, highlighted by successfully briefing and trying two Guatemalan women's claims for asylum, and by his advocacy on behalf of veterans.


  • ICANN obtains advice in highly publicized decision regarding proposed sale of .ORG registryJones Day successfully advised ICANN in conjunction with its highly publicized decision over whether to reject the proposed sale of the .ORG registry on the Internet to a private equity firm that had offered to pay over $1 billion for the registry.
  • Jones Day team wins asylum for two Guatemalan women and their four minor childrenA Guatemalan woman and her daughter-in-law who had both endured extreme violence and oppression fled Guatemala and entered the United States with their four minor children.
  • Chevron defeats class action relating to offshore gas well blowoutJones Day successfully represented Chevron Corporation in a class action lawsuit originally brought by 65,000 Nigerians seeking $5 billion on the claim that a natural gas well blowout six miles offshore caused widespread health and fishing impacts to an area roughly the size of New Jersey.
  • Synopsys wins $30 million jury verdict and obtains permanent injunction in software IP actionAfter a two-week trial, Jones Day obtained a $30.4 million jury verdict on behalf of Synopsys, Inc. on its copyright infringement claim against ATopTech, Inc. Synopsys is a leader in electronic design automation (EDA) software.