Perry A. Lange

Mr. Lange is a litigator who represents clients in diverse antitrust matters before US courts and government agencies, especially cases that involve competitor collaborations, novel distribution arrangements, standard setting, IP licensing and patent misuse. He has represented companies in the high technology, telecommunications, entertainment, pharmaceutical, energy, manufacturing, financial services and transportation sectors in complex antitrust and IP matters in state court, US district courts and federal appellate courts. Recent cases have involved sections 1 and 2 of the Sherman Act, state law antitrust and unfair competition claims, as well as patent damages and enforceability.

In addition to litigation, Mr. Lange represents clients in criminal and civil antitrust investigations, and he has represented companies in congressional investigations and in preparing for hearings on antitrust matters. Mr. Lange counsels clients on the antitrust implications of business practices such as distribution incentives, advertising restrictions, patent licensing and joint venture formation. He has also secured regulatory clearance for acquisitions before the Department of Justice and the Federal Trade Commission.

Mr. Lange also has an active pro bono practice in which he has represented clients such as a disabled Iraq war veteran, a small business owner and a federal employee in civil rights and benefits matters before US courts, federal agencies and local government.

Earlier in Mr. Lange's professional career, he worked for seven years in the United States Congress, including as a legislative assistant for a member of the Senate and a legislative director for a member of the House of Representatives. He was also a senior legislative representative for a US civil rights/civil liberties organization. 


    • Represents a major movie theatre chain in state and federal antitrust litigation over film licensing practices brought by competing theatre owners.
    • Represents global oil and gas company in antitrust MDL over alleged manipulation of price reporting agency reports.
    • Represents major technology manufacturer in matters concerning standards setting and IP licensing.
    • Represents large financial institution in connection with merchant and consumer antitrust litigation concerning the setting of interchange fees. 
    • Represented large telecommunications manufacturer in antitrust case challenging conduct related to participation in a standards setting organization.
    • Member of trial team for pharmaceutical patentee and its exclusive licensee in patent damages trial that resulted in $2.15 billion settlement; obtained dismissal of patent misuse defenses and unfair competition counterclaims on pre-trial motions. 
    • Obtained antitrust clearance for buyer in major ambulance services provider transaction.
    • Represented consumer electronics patentee before the Federal Circuit in a significant case at the intersection of patent licensing and antitrust law. The en banc Federal Circuit rendered a favorable decision enforcing the limits of the patent misuse doctrine.
    • Represented a major insurance company in securing dismissal of Sherman Act claims before the US district court in the Insurance Brokerage Antitrust MDL, as well as securing a favorable Third Circuit decision affirming dismissal of those claims.
    • Represented international airlines in multi-district litigation concerning allegations of price-fixing in the international air cargo and passenger sectors.
    • Represented shipping company in antitrust arbitration and state court antitrust and unfair competition law actions.
    • Represented a technology company in securing FTC clearance of a transaction in the mobile internet advertising industry.
    • Negotiated settlement of a potential sexual orientation discrimination case against the city of Manassas on behalf of a home-based business owner denied a permit. The city council reversed itself and granted the permit. 
    • Represented a severely disabled veteran of Operation Iraqi Freedom in an appeal of his US Department of Veterans Affairs (VA) disability rating. Based on the appeal, the VA awarded his client the maximum level of compensation a veteran can received for service-connected disabilities, and doubled the client's monthly disability payments he and his family rely on as their primary source of income.


  • Recognized in the 2019 edition of Who's Who Legal: Competition
  • Recommended in the 2016 and 2017 editions of The Legal 500 United States for his antitrust cartel and merger control practices
  • Selected as a "Rising Star" in the 2015 edition of Washington DC Super Lawyers
  • Received the John H. Pickering Award from the firm in 2015 for his outstanding work in the areas of pro bono representation and community service

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  • Education

    • JD, Georgetown University Law Center, 2005

      cum laude
    • BA, International Relations and Economics, Tufts University, 1996

  • Admissions

    • District of Columbia

    • Virginia

  • Government Experience

    • Federal Legislative Branch

      US Senate

      Legislative Assistant, Senator Paul Wellstone (D-MN)
    • Federal Legislative Branch

      US House of Representatives

      Legislative Director, Congressman John F. Tierney (D-MA)