Siprut PC is a commercial litigation firm based in Chicago, with additional offices in San Diego, Washington, D.C., Boston, and Colorado Springs. The firm focuses its practice exclusively on complex litigation and pre-litigation counseling, encompassing a wide variety of areas and issues. The firm’s primary litigation groups include plaintiffs’ class action litigation (with an emphasis on consumer law issues); qui tam and whistleblower litigation; intellectual property and patent litigation; and business litigation.

Siprut PC and its attorneys have repeatedly been appointed as lead counsel in federal and state class action lawsuits across the country, and have recovered hundreds of millions of dollars for its clients. The firm has been prominently featured in the mainstream media for its successes and advocacy on behalf of consumers nationwide, and our attorneys are frequently invited to speak at seminars on consumer protection and class action issues.

Click on each area of practice below for more detailed information on that specific practice:

  • Class Actions and Consumer Litigation
    Siprut PC is an established leader in the class action arena. The firm has been recognized for its “high-stakes, high-profile cases against large defendants” and its advocacy on behalf of consumers.

  • Whistleblower And False Claims Act Litigation
    Siprut PC has a substantial whistleblower practice; our attorneys have led litigation resulting in settlements in excess of $100 million, and we are actively prosecuting numerous False Claims Act lawsuits.

  • Executive Compensation and Non-Competes
    Siprut PC has a substantial practice representing high-level executives and officers pursue claims to compensation withheld by the client’s employer, usually upon termination of employment.

  • Business Litigation
    We represent corporations in complex business disputes against other corporations, emphasizing substantial experience with emergency injunctive relief proceedings (representing both plaintiffs and defendants), restrictive covenant litigation, and large commercial contract disputes.

  • Bankruptcy Litigation
    Siprut PC attorneys have two decades of experience involving some of the largest, most complicated bankruptcies in history. We represent corporations, executives, and high-net-worth individuals in bankruptcy matters against corporate debtors.

  • Pre-Litigation Counseling and Compliance
    Siprut PC frequently provides counseling and compliance advice in a pre- or non-litigation context, including crafting litigation avoidance strategies.

  • Antitrust, Unfair Competition and RICO Litigation
    Siprut PC attorneys have substantial experience handling antitrust and unfair competition litigation, including RICO claims, against some of the largest corporations in the world.

  • Professional Malpractice
    Siprut PC has substantial experience prosecuting professional malpractice cases in the legal and accounting industries, involving significant economic loss.

  • Personal Injury
    Siprut PC attorneys have obtained multiple personal injury verdicts and settlements for our clients in excess of $1 million, in areas ranging including aviation liability, medical device implantation, interstate trucking accidents, auto accidents, premises liability, and medical negligence.

  • Civil Rights and Constitutional Claims
    We represent the victims of civil rights abuses and take cases implicating important civil rights issues on a class-wide basis, including first amendment challenges, false arrests, police brutality, and wrongful convictions.

Siprut PC has built an extensive network of leading specialized lawyers and law firms. We are able to leverage those relationships throughout the country to represent our clients anywhere in the United States.