1. Home
2. Daily News
3. Former practice chair allegedly overbilled…

Ethics

Former practice chair allegedly overbilled clients by over $3.5M at 2 BigLaw firms, ethics complaint says

By Debra Cassens Weiss

February 26, 2025, 12:13 pm CST

A former partner in the Chicago offices of two large international law firms is facing an ethics complaint alleging that he falsified billing records and caused clients to be overbilled by more than $3.5 million over a period of 20 years.

William Michael Doyle Jr. is accused in a Feb. 19 ethics complaint filed by the Illinois Attorney Registration and Disciplinary Commission, the Legal Profession Blog reports.

The ethics complaint does not name the firms. But an online press release from 2022 said Doyle was the trusts and estates practice chair at Winston & Strawn before he joined Greenberg Traurig as a shareholder in August 2022.

“Doyle is a renowned tax and estate-planning expert with more than four decades of experience representing many of the wealthiest families in the United States and around the world,” the press release said.

While working at both firms, Doyle directed other lawyers and staff members to perform tasks for clients and reviewed their time-keeping records. Doyle was supposed to review the records and approve them for submission to the accounting department, which then billed clients.

The ethics complaint alleges that Doyle caused clients to be overbilled for the work that he oversaw and performed by recording time for services not provided, by inflating the hours worked, by billing for time spent on other clients, and by recording time that should have been written off.

The ethics complaint alleges that Doyle caused Winston & Strawn clients to be overbilled by $2,529,378 over 18 years. He is accused of causing Greenberg Traurig’s clients to be overbilled by $973,910 over a period of less than two years.

After learning of the time misrepresentations, both firms reviewed client invoices and offered to refund the amounts based on false information.

“Some, but not all, of the clients agreed to accept the refunds offered by the firms,” the ethics complaint says.

When reached by phone, Doyle said he could not comment without first speaking with his lawyer.

A Greenberg Traurig spokesperson gave this statement to the ABA Journal: “Mr. Doyle was with our firm for less than two years. As soon as we became aware of questionable billing practices, we investigated, and within weeks, took corrective actions, including notifying the Illinois bar [the Illinois Attorney Registration and Disciplinary Commission], fully cooperating with the ARDC and offering a full refund of amounts that appeared to have been questionably billed to impacted clients. By the conclusion of our investigation, Mr. Doyle was no longer associated with our firm.”

A Winston & Strawn spokesperson gave this statement to the ABA Journal: “Bill Doyle left Winston & Strawn in August 2022 and has not been associated with our firm since that time. We are committed to upholding the highest ethical standards and have zero tolerance for any actions that compromise our integrity or the trust our clients place in us. The complaint does not name Winston or cite any misconduct by the firm but instead alleges that Mr. Doyle made misrepresentations to the firm’s billing department that resulted in the improper invoices. Since learning of this matter, we have conducted a thorough investigation and taken appropriate measures to address any harm to our clients.”

Write a letter to the editor, share a story tip or update, or report an error.