Boni, Zack & Snyder LLC - John E. Sindoni

John E. Sindoni

University of Pennsylvania Law School (J.D., cum laude 2003, Order of the Coif), where he served as Executive Editor of the Law Review and a member of the Moot Court Board.
University of Pennsylvania School of Arts and Sciences (B.A., cum laude 2000).

New Jersey
United States Court of Appeals for the Second and Third Circuits
United States District Courts for the Eastern District of Pennsylvania and the District of New Jersey.

John E. Sindoni


John E. Sindoni is a seasoned commercial litigator, having worked on cases involving the antitrust laws, breach of contract, business torts, and intellectual property. He has also advised clients on compliance with antitrust and trade regulation laws.

In the area of antitrust law, he is currently involved in the firm's representation of the plaintiffs in In re: Interior Molded Doors Antitrust Litigation, Lead Civil Action No. 3:18-cv-00718-JAG (E.D. Va.), the City of Philadelphia Board of Pensions in In re Foreign Exchange Benchmark Rates Antitrust Litigation, No. 13-cv-7789 (S.D.N.Y.), and an end-payer plaintiff in class action litigation involving an alleged conspiracy among generic drug manufacturers to reduce competition and fix prices for generic drugs, in In re Generic Drugs Antitrust Litigation, MDL No. 2724, 16-MD-2724 (E.D. Pa.). Prior antitrust matters include In re Domestic Drywall Antitrust Litig., MDL No. 2437 (E.D. Pa.), an antirust class action involving a conspiracy to fix the price of domestic drywall, where Mr. Sindoni was responsible for the plaintiffs’ third-party discovery of domestic and international trade associations and industry financial analysts. 

Mr. Sindoni also handles class actions representing authors. In Keiler et al. v. Harlequin Enterprises Ltd. et al., No. 12-5558 (S.D.N.Y.), a class action challenging Harlequin’s methodology for calculating e-book royalties, Mr. Sindoni was responsible for briefing an appeal in the Second Circuit Court of Appeals that reversed the trial court's order dismissing the complaint. After the case was remanded back to the trial court, he was involved in discovery and mediation, which led to a class-wide settlement. In connection with the firm’s representation of a class of freelance writers in a class action against the leading electronic databases in In re Literary Works in Electronic Databases Copyright Litigation, MDL No. 1379 (S.D.N.Y.), Mr. Sindoni handled the dispute resolution process that resolved the claim disputes raised by hundreds of participating print publications submitted as part of the settlement. 

Prior to joining Boni, Zack & Snyder, Mr. Sindoni was an associate in the trial department at Duane Morris LLP, where his experience included working on antitrust, commercial litigation, and antitrust matters, including American Express Travel Related Services, Inc. v. Visa U.S.A., Inc., No. 04-CV-08967-BSJ-DFE (S.D.N.Y.) (represented a credit-card issuer in defense of antitrust action related to Visa and MasterCard rules and policies); In re Hydrogen Peroxide Antitrust Litig., MDL No. 1682 (E.D. Pa.) (representing a chemical company that opted out of a class action and pursued its own antitrust claims); Cosmetic Gallery, Inc. v. Schoeneman Corporation et al., No. 01-4896 (D.N.J.) (representing a distributor defendant in action alleging group boycott relating to limited distribution policies for hair care products); Schreiber et al. v. Eli Lilly & Co., No. 05-2616 (E.D. Pa.) (representing plaintiffs in an inventorship and patent infringement suit relating to a major pharmaceutical product); and a AAA arbitration in which he represented a manufacturer in a dispute with national retailer over breach of distribution agreement.

Prior to joining Boni, Zack & Snyder, Mr. Sindoni also served as a Staff Attorney for the United States Court of Appeals for the Third Circuit.

Mr. Sindoni's pro bono experience includes having represented a prisoner in a section 1983 action alleging use of excessive force by prison guards. The case settled on the eve of trial.

Mr. Sindoni was selected to the Pennsylvania “Super Lawyers Rising Stars” list issued by Thomson Reuters each year from 2015 through 2018 and the Pennsylvania “Super Lawyer” list in 2019 and 2020.


  • Co-author, "Evaluating Antitrust Issues in the Settlement of Litigation," Antitrust and Intellectual Property, Vol. 6., No. 1 (Winter 2006)
  • Contributor, 2004 Annual Review of Antitrust Law Developments (American Bar Association, Antitrust Section)
  • Contributor, 2003 Annual Review of Antitrust Law Developments (American Bar Association, Antitrust Section)