Skip to content Gregory D. Brunton


41 South High Street
Suite 2495
Columbus, OH 43215

600 Superior Ave. East
Fifth Third Building, Suite 1300
Cleveland, OH 44114

201 E. Fifth Street
Suite 1900
Cincinnati, OH 45202


J.D., cum laude, The Ohio State University, Moritz College of Law, 1993

  • Managing Editor, The Ohio State Law Journal

B.A., University of Akron, 1990


AV Preeminent® Rated with Martindale-Hubbell® Peer Review Ratings™

Best Lawyers in America®, "Lawyer of the Year," Eminent Domain and Condemnation Law, Columbus, OH (2022)

Best Lawyers in America® distinction in Commercial Litigation (2016-2024), Eminent Domain and Condemnation Law (2017-2024) and Oil and Gas Law (2023-2024)

Named to "Who's Who in Energy," Columbus Business First, 2013 and 2014

2021 Top Lawyer in Energy Utilities, Columbus CEO Magazine

2014 Top Lawyers Central Ohio, Columbus CEO Magazine

Recognized as a Super Lawyer by Ohio Super Lawyers Magazine from 2012 through 2018


Greg Brunton is Managing Partner of GRSM’s Ohio offices, Chair of the Energy Infrastructure Practice Group, and Co-Chair of the firm’s Energy Practice Group.

Greg is an accomplished litigator and trial attorney who focuses his practice on large exposure and high-risk matters in the areas of complex commercial business disputes, energy, eminent domain and land use, as well as professional liability defense. 

As Chair of the Firm’s Energy Infrastructure Group, Greg has dedicated a substantial portion of his career to the representation of midstream energy companies in all aspects of their projects.  Greg’s experience as lead counsel for major infrastructure projects allows him to provide clients with an in depth knowledge of the unique and time sensitive issues surrounding such projects, ranging from proving the project’s public necessity and right to eminent domain, injunctive relief obtaining survey access and immediate possession, easement acquisition, environmental and regulatory issues, and litigating large risk just compensation matters.  
As Co-Chair of the firm’s Energy Practice Group, Greg’s practice has focused on the myriad of legal issues arising from the Utica and Point Pleasant shale development.  He has been a trusted resource for many clients, from publicly traded corporations to individuals and agribusinesses, regarding all issues related to the shale plays, including oil gas leasing, Dormant Mineral Act litigation, title disputes, mineral claims, and royalty rights.  He has also handled matters related to solar power and is knowledgeable regarding emerging technologies such as carbon capture and hydrogen fuel.

Greg has also litigated commercial disputes with bet the company ramifications.  Such matters include the defense of class actions, shareholder disputes, large risk contractual liability claims, trade secret and covenant not to compete cases, and commercial lease disputes.
Greg also dedicates a substantial portion of his practice focusing on the defense of professional liability litigation involving Officers and Directors, attorneys, accountants, brokers and architects and engineers.  Some of his more notable successes in this area include a defense jury verdict on behalf of a major law firm involving the handling of a class action lawsuit, successfully defending an intellectual property law firm at the Federal Circuit Court of Appeals, defending a creditor rights law firm in a class action, and successfully litigating shareholder disputes.

Greg has argued cases in the Ohio Supreme Court, the Federal Circuit Court of Appeals in Washington D.C., the Sixth Circuit Court of Appeals and state appellate courts throughout Ohio.


  • Ohio
  • Texas
  • U.S. District Court, Southern and Northern Districts of Ohio
  • U.S. Court of Appeals, Sixth Circuit
  • Federal Circuit Court of Appeals


  • State Bar of Ohio
  • Columbus Bar Association
  • Ohio Association of Civil Trial Attorneys
  • Energy Mineral Law Foundation (EMLF), Member
  • DRI
Publications & Presentations