• Harvard Law School (J.D., 1994), magna cum laude
  • Princeton University (A.B., Politics, 1991), summa cum laude


  • Hon. Alfred T. Goodwin, U.S. Court of Appeals, Ninth Circuit

Harry Mittleman is a litigation partner in the Los Angeles office of Irell & Manella LLP, where he also serves as the firm’s Co-General Counsel.

Mr. Mittleman's practice encompasses complex business litigation, including professional liability defense, IP litigation, securities litigation, antitrust and class action defense. He handles cases in California's trial courts, intermediate appellate courts and State Supreme Court, as well as federal district courts, federal appellate courts, and in the United States Supreme Court. Mr Mittleman also has significant experience trying cases in arbitrations. His ADR experience includes successfully mediating numerous cases, in his capacities as counsel for various parties and also as a neutral.

In addition to his practice, Mr. Mittleman teaches an advanced class in commercial law, Business Torts at the UCLA School of Law.

Mr. Mittleman has been selected for inclusion in Los Angeles Magazine's Southern California "Super Lawyers" in business litigation from 2010 through 2016.

A major focus of Mr. Mittleman's practice is defending law firms and lawyers against lawsuits alleging legal malpractice, breach of fiduciary duty and conflicts of interest. Mr. Mittleman also frequently counsels law firms on issues of professional liability, professional responsibility and law firm governance. He has represented some of the world’s leading international law firms.

On behalf of other law firms and lawyers, Mr. Mittleman has obtained dismissals of complaints alleging legal malpractice. He also obtained a published appellate affirmance of a judgment dismissing claims for alleged professional negligence against a leading international law firm. The published decision held, as a matter of first impression under California law, that a legal malpractice lawsuit must be dismissed where the law firm could not effectively defend the suit without revealing privileged client confidences.

Mr. Mittleman has extensive experience handling complex business litigation. He recently was hired by a leading technology company to assume the defense of a lawsuit that prior counsel had handled at trial, which had resulted in an eight-figure jury verdict against the company. On behalf of the client, Mr. Mittleman won a motion for a judgment notwithstanding the verdict and for a new trial, and successfully defeated plaintiff's claim for violation of the California Unfair Competition law following a bench trial. Mr. Mittleman is currently defending the defense judgment that he obtained for the client in appellate proceedings before the California Court of Appeal.

Mr. Mittleman also recently was a member of the Irell team that successfully obtained a summary judgment of non-infringement in a patent lawsuit against Irell's client, B/E Aerospace, and then obtained a published appellate affirmance of that summary judgment from the United States Court of Appeals for the Federal Circuit.

Mr. Mittleman has also represented a number of the nation's leading motion picture studios and television networks in copyright, trademark, right of publicity/privacy, unfair competition and contract disputes. He also has substantial experience in the area of complex class action litigation, including the defense of securities fraud class actions, SEC proceedings, antitrust class actions, and employment law class actions.

Mr. Mittleman joined Irell & Manella in 1995 following a clerkship with the Honorable Alfred T. Goodwin of the United States Court of Appeals for the Ninth Circuit. He became a partner in the firm in January 2001. He is the former chair of the firm’s Hiring Committee, and he has also served on the firm's Executive Committee.

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Bar & Court Admissions

  • 1994, California
  • U.S. Court of Appeals, Ninth Circuit
  • U.S. District Court, Central District of California