parallax background

The Choice Of A Lawyer Is Important


Celebrating 40 Years

Celebrating 40 years of service this year, William P. Gavin continues to provide a proactive and innovative approach to law for his clients. Mr. Gavin has proudly provided legal support to the community for forty years. Mr. Gavin looks forward to continuing to provide many years of award-winning legal service.


Trusted & Certified

William Gavin is board certified in Civil Trial Advocacy and Pre-Trial Advocacy by the National Board of Trial Advocacy (NBTA)*, a private foundation that certifies attorneys who meet certain qualifications as Civil Trial Advocates. These qualifications include litigation and trial experience, references from fellow attorneys and judges, and demonstration of knowledge of applicable law and legal principles.


Licensure Across State Lines

William Gavin is licensed to practice law in Illinois and Missouri. He is also admitted to practice before the Supreme Court of the United States, the United States Courts of Appeals for the Seventh and Eighth Circuits, the United States District Courts for the Southern and Central Districts of Illinois, the Eastern District of Missouri, and the Southern District of Indiana.


Top Rated & Reviewed

Gavin Law Firm has consistently been listed as a member of Super Lawyers in Illinois. Super Lawyers is a rating service of outstanding lawyers from more than 70 practice areas who have attained a high-degree of peer recognition and professional achievement. This selection process includes independent research, peer nominations and peer evaluations.


Litigation Counsel of America Fellow

William Gavin has been selected as a Fellow with LCA – The Litigation Counsel of America. A close-knit, peer-selected, and aggressively diverse honorary society of 3,500 of the best trial lawyers you will find anywhere. Less than one-half of one percent of American lawyers, an invitation-only collegial network of lawyers who effectively represent clients across North America and around the world.