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Allyson N. Ho represents clients in high-stakes litigation in US state and federal trial and appellate courts nationwide, including the US Supreme Court, where she has argued multiple times as lead counsel. Co-chair of the firm’s appellate practice, Allyson has litigated cases in every federal court of appeals and in the highest courts of multiple states. She has won cases for Fortune 500 companies, represented former high-ranking US and foreign government officials in federal court, and counseled US senators and presidential candidates.
In 2014, Allyson was the only female attorney in private practice to argue more than one case at the US Supreme Court—arguing two cases within 21 days. In 2017, Allyson argued two more cases at the US Supreme Court, one of which includes the Oil States Energy Services LLC v. Greene’s Energy Group, LLC (2017) case, described by intellectual property experts as “the most important patent case in modern history.”
Recognized by a number of publications as a leading appellate litigator, Allyson handles complex cases involving arbitration, constitutional issues, the Racketeer Influenced and Corrupt Organizations Act (RICO), antitrust, punitive damages, class actions, and labor and employment matters. Acknowledged as one of the top appellate lawyers in the country, Allyson was named a 2015 Appellate MVP by Law360. Chambers characterized Allyson as “a superstar young appellate lawyer,” and the National Law Journal named her in its 2010 Appellate Hot List. She is also recognized by Texas Lawyer as a “Distinguished Leader” (2017) and one of the top 20 “winning women” litigators in Texas (2015), listed in Benchmark Litigation Star (2017), listed as The Best Lawyers in America (2017), and named a Top Woman Lawyer in Best Lawyers (2017).
Allyson also represents clients in government investigations and adversarial proceedings. She has a distinguished record of high-level government service. She served as a special assistant to President George W. Bush and counselor to a US Attorney General, overseeing the Justice Department’s homeland security and immigration enforcement efforts. She clerked for US Supreme Court Justice Sandra Day O’Connor and Judge Jacques L. Wiener Jr. of the US Court of Appeals for the Fifth Circuit. A constitutional lawyer, Texas litigator, and member of the Texas Judicial Council, Allyson regularly advises the Texas Supreme Court and other members of the state judiciary. Texas Governor Rick Perry appointed her to the council in 2008 and reappointed her in 2013.
With both an M.A. and Ph.D. in English, Allyson writes extensively for such publications as The New York Law Journal, Texas Lawyer, and the ABA’s Litigation. She speaks at venues across the United States, including the Washington Legal Foundation Briefing Series, where she delivered a speech titled “The US Supreme Court: Previewing the October 2014 Term.” She has also presentedat programs sponsored by the Harvard Journal on Legislation, the State Bar of Texas, the Center for Politics and Governance at the Lyndon B. Johnson School of Public Affairs, and the Federalist Society for Law and Public Policy Studies.