Howard LangerHoward Langer

Howard Langer, a founding partner of the firm, 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 what was then the largest antitrust recovery ever in the Third Circuit and in Faloney v. Wachovia Bank, which recovered over $150 million on behalf of victims of telemarketing fraud. Howard is Professor of Law (Adjunct) at the University of Pennsylvania Law School where he teaches antitrust law. He has been a visiting professor at the University of Tokyo Law School and a visiting fellow at the Centre for Competition Law and Policy at Oxford. A third edition of his treatise, The Competition of Law of the United States was published this year by Wolters Kluwer. Howard is a graduate of the City College of New York, magna cum laude, and holds a master’s degree from the University of Toronto.


John J. GroganJohn J. Grogan

John Grogan and Howard Langer founded the firm in 2004. Since that time, John has focused his practice on antitrust, consumer rights and constitutional matters. In the antitrust area, John has represented clients in large matters involving the intersection of antitrust law and intellectual property especially in the pharmaceutical context. John served with others in the firm as antitrust counsel for a large generic pharmaceutical manufacturer in a series of high profile antitrust matters.


Edward Diver

Edward DiverNed Diver is a partner and has worked at the firm since 2005. He focuses on consumer and antitrust law, as well as civil rights. He is lead counsel in major challenges on behalf of consumers to the broadcasting practices of Major League Baseball and the National Hockey League, and has received numerous awards. Ned has represented individuals, corporations, and classes in a broad range of industries from banking and financial products to pharmaceuticals.


Irv AckelsbergIrv Ackelsberg

Irv Ackelsberg joined the firm in September 2006. A prominent public interest lawyer, Irv practiced for 30 years with Community Legal Services, Inc. (“CLS”) of Philadelphia, generally recognized among the highest quality civil legal aid programs in the country. At CLS, Irv led its consumer law work, developing a national reputation for creative advocacy involving issues such as representation of homeowner victims of mortgage fraud, student victims of fraudulent trade schools, low-wage workers harmed by abusive employment background screening, and consumer creditors in chapter 11 proceedings.


Peter Leckman

Peter LeckmanPeter Leckman joined the firm in 2011 and was named a partner in 2014. He specializes in antitrust and consumer class actions and appellate work. Together with Ned Diver and Howard Langer, Peter served as lead counsel in a pair of antitrust lawsuits challenging the broadcast practices of the National Hockey League and Major League Baseball. Peter also represents consumers in actions brought under the federal racketeering statute. In 2016, he was elected to the American Law Institute.



Langer, Grogan & Diver P.C.
1717 Arch Street, Suite 4130
Philadelphia, PA 19103

Phone: 215-320-5660  |   Fax: 215-320-5703
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