• vcard
  • Education
    • J.D., magna cum laude, Notre Dame Law School, 2009
    • B.A., cum laude, University of Dallas, 2004
  • Court Admissions
    • U.S. District Court, Eastern District of Michigan, 2009
    • U.S. Court of Appeals, Sixth Circuit, 2011
    • U.S. District Court, Eastern District of Missouri, 2014
    • U.S. District Court, District of Colorado, 2014
    • U.S. District Court, Southern District of Illinois, 2015
    • U.S. Court of Appeals, Eighth Circuit, 2015
Britton St. Onge works hard to resolve his clients’ legal tangles using creative, tailored, and cost-effective solutions without losing focus on the client’s overall business objectives.  An ardent disciple of the view that winning the battle achieves little without winning the war, Britton recognizes there is much to be gained from careful thought and planning at the early stages of a new dispute, even before a lawsuit has been filed.  He has deep experience with all stages of litigation, including first-chair trial experience, and enjoys crafting watertight legal and factual arguments that persuade the targeted audience of the force of his clients’ position.  Britton’s legal experience before entering private practice exposed him to complex and nuanced jurisdictional disputes. That background gives him a deeper understanding of the federal judiciary, which he uses to his clients’ strategic advantage.  

Since joining Polsinelli, Britton has served clients in a variety of ways, including representing them in litigation involving:
  • Breach of contract / warranty disputes – particularly supply-chain disputes for manufacturers in various industries
  • Disputes arising from mergers and acquisitions 
  • Claims under the federal Fair Debt Collection Practices Act and related state laws
  • Trust disputes
  • Premises liability 
Before joining Polsinelli, Britton served as a law clerk to Judge Richard A. Griffin of the U.S. Court of Appeals for the Sixth Circuit and Judge Stephen J. Murphy, III, of the U.S. District Court for the Eastern District of Michigan. His background working closely with judges gives him a unique insight into the judicial decision-making process and allows him to better address the clients' specific needs.
  • Represented before a jury an individual charged with multiple crimes under state law.
  • Secured a defense verdict following trial in a case asserting our client’s personal liability on a contract between two companies.
  • Obtained dismissal of lawsuit filed against identify theft protection company alleging violations of email-marketing law.
  • Assist in drafting amicus brief filed with the U.S. Supreme Court in case addressing the intersection of the freedom of speech and the authority of the police to keep the peace.
  • Represent city officials (before state trial and appellate courts) in two lawsuits challenging the lawfulness of a decision to outsource certain functions of the office to a private contractor. 
  • Represent a bank in its efforts to obtain repayment on notes and personal guaranties purchased from the FDIC after the originating bank failed.  
  • Represent cancer treatment center in contract action involving services provided in clinical drug trials. 
  • Successfully opposed summary judgment in complicated copyright action involving software code; case was later tried and jury found in favor of our client.  
  • Member of legal team defending paper finishing company in lawsuits nationwide alleging breach of warranties concerning finished products.
  • In action involving contract for development of land in St. Louis, successfully obtained an order transferring the action from federal court in St. Louis to a federal court in California, where client resides. 
  • Represent limestone mining company in efforts to obtain mining permit from state environmental regulators, including litigation that followed after the permit was issued. 
  • Successfully opposed court challenge to significant arbitration award based on late service of the challenge, thereby saving client the expense of opposing the challenge on the merits. 
  • Obtained early dismissal of claims against beneficiary of life insurance policy brought by policy’s former beneficiary.  
  • Obtained dismissal of federal lawsuit filed against mortgage servicing company and debt holder for wrongful foreclosure and claims related to loan origination. 
  • Secured dismissal of trademark action on grounds that the court could not exercise personal jurisdiction over out-of-state defendant consistent with the U.S. Constitution. Pathfinder Software, LLC v. Core Cashless, LLC, 127 F. Supp. 3d 531 (M.D.N.C. 2015).
  • Represented investment banking firm in dispute over fee due upon the successful sale of a business to strategic buyer; case settled on terms favorable to the client.
  • Represented national paint company before the Missouri Supreme Court in a successful challenge to personal jurisdiction based on use of a website.