Howard Langer has specialized in complex commercial litigation, particularly antitrust law, since graduating the University of Pennsylvania Law School in 1977. He was lead counsel in In re Linerboard Antitrust Litigation, which resulted in the largest antitrust settlement ever in the Third Circuit and was lead counsel in Faloney v. Wachovia Bank, which recovered over $150 million on behalf of victims of telemarketing fraud. Howard also teaches antitrust law at the University of Pennsylvania Law School. In 2009, Howard taught a seminar at the Centre for Competition Law and Policy at Oxford.

The prestigious Chambers & Partners USA Guide ranks Howard as one of the four leading antitrust specialists in Philadelphia, stating “Standout attorney Howard Langer is lauded by clients for being ‘tenacious-he doesn’t give up and he never sells out.” In 2007, the Guide wrote: “’Terrific’ Howard Langer, ‘does a spectacular job for his client,’ acknowledge his peers. They attribute his success to his “clear thinking, knowledge of the law and understanding of economic theory.”  In Cullen v. Whitman Medical Corp., 197 F.R.D. 136, 149 (E.D. Pa. 2002), the court  wrote, referring to Howard: “‘you may have to … go the extra step and … if there’s anyone who is … going to be able to do that, you will be able to do it … you go after it and you don’t let it go….’”

Representative cases, aside from Linerboard and Faloney, include Chemi SpA v. GlaxoSmithKline, 356 F. Supp. 2d 495 (E.D. Pa. 2005), and Mutual Pharmaceutical Co., Inc. v. Hoechst Marion Roussel, Inc. 1997 WL 805261 (E.D. Pa. 1997), both of which broke new ground in the area of antitrust law relating to patents in the pharmaceutical industry. Beilowitz v. General Motors Corp., 233 F. Supp. 2d 631 (D.N.J. 2002), enjoined General Motors from imposing a new national sales program on one of its largest distributors.

Howard is a member of the American Law Institute.