Bar Admissions

  • New York, 1990
  • U.S. District Court Western District of New York, 1990
  • U.S. Bankruptcy Court Western District of New York, 1990


  • University at Buffalo Law School, Buffalo, New York, J.D. (Cum Laude), 1989
  • Niagara University, B.A. (Magna Cum Laude), 1986

Professional Association

  • Commercial Law League of America
  • Erie County Bar Association (Commercial and Bankruptcy Law Committee)
  • New York State Bar Association

Professional Recognition

  • Named to Best Lawyers in America, 2021-2024
  • Selected by New York Super Lawyers Upstate Edition, 2021-2023

News & Presentations

  • Agency Sales Magazine. "Key Reasons to Have a Succession Plan in Place for Your Business." March 2024 issue, author.

John K. Rottaris concentrates his practice in the areas of commercial and business litigation, creditors’ rights, commercial collections, landlord-tenant law, bankruptcy law and tax certiorari. He also represents manufacturers and manufacturers’ sales representatives in commission and contract disputes.

John has represented clients in all phases of trial and appellate practice before local, state and federal courts, as well as alternative dispute resolution forums. He has extensive experience in the area of commercial and business litigation and tax certiorari proceedings. His clients include individuals, small and large business enterprises and national companies. He has also successfully represented school districts, municipalities and taxpayers in tax certiorari and tax assessment proceedings.