The practice was established in 1929 by R. B. "Bob" Garvin. Alan Agee, the firm's current senior partner, joined Mr. Garvin in 1972, but Mr. Garvin passed away in 1975. Brett Agee and James W. Carlton, Jr., joined the firm in 1988, and, most recently, Logan Beadles. In 2001, the firm became one of the very few firms to have argued and won an appeal to the United States Supreme Court.

In this drawing by CNN sketch artist Todd Crespi,
John Mashburn is shown arguing the case before the Supreme Court.

The firm is AV-rated, which is the highest rating awarded by Martindale-Hubbel. Martindale-Hubbel has been rating attorneys for over 100 years, based upon confidential surveys of judges and other lawyers. The "A" portion of the rating signifies "very high to preeminent" legal ability, taking into account the experience, nature of firm's practice and qualifications relevant to the practice of law, while the "V" signifies "very high" ethical standards, including faithful adherence to professional standards of conduct and ethics of the legal profession, professional reliability and diligence, and standards relevant to the discharge of professional responsibilities.