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William L. Patberg

1000 Jackson Street
Toledo, OH 43604


Denise Large

William L. Patberg has over thirty years of experience in both the administrative and judicial aspects of the environmental law representing clients of all sizes in a wide variety of industries.  His principal areas of practice are air and water pollution control matters.  In connection with this practice, Bill has been admitted to and has appeared before the U.S. Supreme Court, the United States Courts of Appeals for the Third, Sixth, Seventh and D.C. Circuits, the United States District Courts for the Northern District of Ohio and the Northern District of Indiana, the Ohio Courts of Common Pleas, Courts of Appeals, and Supreme Court, the Ohio Environmental Review Appeals Commission, and, pro hac vice, the Appellate Court of Illinois, 1st Judicial District and the Indiana Office of Environmental Adjudications.  He has regularly appeared before and has been involved in negotiations with the United States Environmental Protection Agency and the Ohio, Indiana, Michigan, Illinois and Pennsylvania and Florida environmental agencies in connection with a wide variety of different rulemakings, permits, enforcement and other administrative proceedings.  He has extensive experience assisting companies in identifying and anticipating their compliance obligations, in developing and obtaining agency approval of cost-effective means of achieving their business goals in a manner consistent with environmental requirements, and in defending companies against claims of noncompliance brought by federal and state agencies and environmental groups.  Bill is a frequent speaker at federal, state and local symposia and seminars on a wide variety of air and water pollution control issues. 

Bill is currently primarily focused on representation of refining industry clients and assisting those clients in complicated New Source Review and permitting matters, as well as U.S. EPA’s continued efforts at New Source Review enforcement matters in the refining industry.


  • AV® Peer Review Rated PreeminentTM by Martindale-Hubbell
  • America's Leading Lawyers for Business, Chambers & Partners, Natural Resources & Environment practice
  • Best Lawyers in America, 2005 - 2017
  • Best Lawyers, "Toledo Environmental Law Law Lawyer of the Year," 2017

Professional and Community Affiliations

  • Toledo Bar Association
  • Ohio State Bar Association
  • American Bar Association
  • Ohio State Bar Association Environmental Law Committee
  • American Bar Association Natural Resources and Administrative Law Sections

News Releases

Alternate biographies





  • J.D., magna cum laude, University of Minnesota, Order of the Coif; President University of Minnesota Law Review, 1978
  • B.A., English, Lafayette College, 1969

Bar and Court Admissions

  • Ohio, 1978
  • United States Supreme Court
  • United States Court of Appeals Third Circuit
  • United States Court of Appeals Sixth Circuit
  • United States Court of Appeals Seventh Circuit
  • United States Court of Appeals D.C. Circuits
  • United States District Court Northern District of Ohio



2017 MH AV


WLP Chambers generic 2016