Fleener Petersen Law

Fleener Petersen Law is a criminal defense firm based in Laramie, Wyoming, with an office in Fort Collins, Colorado, representing clients facing state and federal charges throughout Wyoming and Colorado. Founded by former Army JAG officer Tom Fleener and led with partner Devon Petersen, the firm has tried over 100 felony cases and achieved exceptional acquittal rates, specializing in complex federal and state drug conspiracies, white-collar defense, and sex crimes.

About

Fleener Petersen Law is a criminal defense firm based in Laramie, Wyoming, with an additional office in Fort Collins, Colorado. Founded by Tom Fleener, the firm represents clients facing state and federal criminal charges throughout Wyoming, Colorado, and beyond.

Tom Fleener began his legal career as a United States Army JAG Officer, where he compiled a substantial trial record defending service members. His work in military litigation led to a high-profile role at Guantanamo Bay, where he provided vigorous defense representation in complex military tribunal cases—work that earned him a feature in GQ magazine's August 2007 article "The Defense Will Not Rest." After leaving active duty, he established his criminal defense practice in Wyoming, building a reputation for aggressive and skilled representation.

The firm is led by Tom Fleener as founding partner, with Devon Petersen serving as partner. Devon specializes in jury trials, legal research and writing, and appellate advocacy. Together, the attorneys at Fleener Petersen Law have tried well over 100 felony cases to jury verdict, achieving an exceptional acquittal rate. The firm's practice emphasizes complex federal and state drug conspiracies, white-collar defense, sex crimes, and computer crimes, though the attorneys have defended clients across the full spectrum of criminal charges.

The firm's approach centers on vigorous advocacy and thorough case preparation. Client testimonials reflect satisfaction with outcomes: past clients have noted that charges previously considered guilty-plea candidates were entirely dismissed at trial, and that the firm's dedication and courtroom presence influenced prosecutor behavior. One client involved in a federal drug conspiracy case secured a complete acquittal.

Beyond trial work, Tom Fleener is an adjunct professor at the University of Wyoming College of Law, where he teaches trial advocacy and clinical skills. He is also a sought-after lecturer nationwide on courtroom strategy and complex federal defense matters.

Fleener Petersen Law offers free consultations to prospective clients. The Wyoming office is located at 506 South 8th Street in Laramie and can be reached at (307) 460-4333. The Colorado office is at 323 South College Avenue, Suite 7, in Fort Collins, and is available at (970) 717-2570. Clients may also contact the firm by fax at 866-825-6038 or email at contact@fleenerlaw.com.

Overview compiled from the firm's website