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Stephen W. Kelkenberg

Partner; Non-Compete, Non-Solicit, and Trade Secrets Practice Co-Leader
Related Info
  • New York (all trial courts)
  • U.S. Court of Appeals for the Second Circuit
  • U.S. District Court for the Southern District of New York
  • U.S. District Court for the Western District of New York
  • U.S. Tax Court

Canisius College, B.A., Cum Laude

University at Buffalo School of Law, J.D., Cum Laude

Stephen is a co-chair of the firm’s Non-compete, Non-Solicit, and Trade Secrets Practice Area.  He counsels clients on employment and commercial disputes, including situations involving contracts, restrictive covenants, discrimination, trade secrets, and non-disclosure agreements. 

Stephen’s extensive trial experience includes both arbitrations and multiple bench and jury trials in several jurisdictions throughout the United States, including New York and New York City, New Jersey, Florida, and Louisiana.  These cases have included employment discrimination claims, contract and property disputes, Federal civil and New York State human rights matters, trade secret and copyright claims, and disputes involving employee misconduct.  Stephen has litigated several New York State and federal tax matters — both on the prosecution side and assisting clients in the defense of claims brought by the government.  He also represents national and international clients in connection with nationwide product recall litigations, and international arbitrations before the AAA-ICDR.

Stephen routinely counsels clients on regulatory and compliance-related matters as well.  He assists clients in responding to federal investigations, both as parties and non-parties, and aids them in all aspects of subpoena compliance.  In this role, Stephen works with clients to address and handle internal investigations and formal presentations to regulators, and to develop protocols and strategies for future compliance.


  • Listed, Best Lawyers in America (Commercial Litigation, Litigation - Securities) 2022 - 2023
  • Listed, Upstate New York Super Lawyers (Business Litigation) 2019 - 2022
  • Listed, Upstate New York Super Lawyers Rising Stars, 2013
  • National Order of Barristers


Margerum v. City of Buffalo - lead trial counsel

Regan v. Altman (Keller Williams) - lead trial counsel

Johnson v. Hable - lead trial counsel

Kissling Interests v. United States (IRS) - trial counsel

Input/Output, Inc. v. Greatbatch - trial counsel

Alsford v. Berner - trial counsel

Phibro-Tech Inc. v.Osmose Inc. - trial counsel

ACR Electronics, Inc. v. DME Corporation - trial counsel

Kenmore Tower Associates v. Village - trial counsel

Chemical Specialties Inc. v. Osmose Inc. - trial counsel

M&T v. Deutsche Bank Securities, Inc. - $55 Million recovered in securities fraud litigation

Hodgson Russ LLP v. Minnesota Department of Revenue - lead counsel

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