John I. Cadwallader

In October 2015, Grier joined the ATWF team, bringing with him many years of experience in all areas of medical litigation, including cardiovascular, neurologic, neursurgical, radiology, oncology, obstetric-gynecologic and hospital administration issues. Grier’s litigation immersion began with his employment as a staff attorney at the Franklin County Court of Common Pleas in Columbus. His next position with Earl Warburton & Adams lasted over 25 years. Starting as an associate and wo...

Jane Higgins Marx joined Carlile Patchen & Murphy LLP in August 2000 and practices estate and business planning, probate, probate litigation, business succession planning and elder law. Jane counsels individuals, business owners, executives and caregivers on matters of estate planning, estate and gift taxation, income taxation of trusts and estates, charitable giving, business succession and probate. She provides comprehensive planning for disability, including counseling on special needs...

Joel has broad experience, starting with his education at Ohio University, where he majored in accounting and was a member of campus honorary organizations Blue Key and Omicron Delta Kappa. Joel obtained his Juris Doctor from The Ohio State University Moritz College of Law. He was a partner in two regional law firms, served as General Counsel for a large franchising company, and for the last several years has been the owner of The Mirman Law Firm. For over 30 years, Joel has earned Martindale...

Heather B. Sobel is a lawyer recognized by Best Lawyers in the practice area of Family Law. Heather B. practices law in Columbus, Ohio Best Lawyers has recognized Heather B. Sobel since 2026. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Heather B. Sobel is held by other lawyers.

Part of the White Collar Crime and Investigations Practice Group, Mr. Long has represented businesses, business professionals, public officials, medical professionals and educators in matters involving fraud, embezzlement, tax controversies, public corruption, regulatory enforcement matters and business litigation. He manages matters in both federal and state courts as well as before government regulatory entities. His experience includes dealing with the U.S. Department of Justice (DOJ), Fed...

Kristopher Armstrong is a lawyer recognized by Best Lawyers in the practice area of Commercial Litigation. Kristopher practices law in Columbus, Ohio Best Lawyers has recognized Kristopher Armstrong since 2027. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Kristopher Armstrong is held by other lawyers.

James J. Chester is a lawyer recognized by Best Lawyers in the practice areas of Business Organizations (including LLCs and Partnerships), Corporate Law and Real Estate Law. James J. practices law in Columbus, Ohio Best Lawyers has recognized James J. Chester since 2008. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which James J. Chester is held by other lawyers.

John H. Cousins IV is a lawyer recognized by Best Lawyers in the practice area of Family Law. John H. practices law in Columbus, Ohio Best Lawyers has recognized John H. Cousins IV since 2027. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which John H. Cousins IV is held by other lawyers.

Helen Mac Murray has been a leader in the consumer protection area for more than two decades. A founding partner of Mac Murray & Shuster LLP, she consults with and represents numerous entities regulated by federal and state consumer protection laws, regularly working with in-house counsel, executive management, and marketing and sales personnel. Helen previously served as Chief of the Ohio Attorney General’s Consumer Protection Section, named in 2000 as “National Consumer Prot...

Dino Tsibouris is the founding principal at Tsibouris & Associates, LLC. His practice concentrates on information privacy and security, technology acquisition, and financial services regulation. His experience includes implementation of artificial intelligence (AI), drafting Software-as-a-Service (SaaS) agreements, website terms of use, company privacy policies, and software licenses . He was previously an attorney with Thompson Hine LLP and served as Vice President and Counsel for eComme...