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Attorneys & Staff

Bob Tyrrell first established the firm in 1980 as a sole practitioner. Mike Mason joined Bob in 1990, and the firm became Tyrrell and Mason. Bob Pillote joined the firm in 2006, which then changed its name to Tyrrell, Mason & Pillote, P.C. Bob Tyrrell retired from the practice of law in January, 2016, and Mike Mason retired from the firm in December, 2019, but both remain experienced and trusted advisors to the firm. Each of our attorneys has received recognition from peers in the legal community for our professional abilities and ethics. Together, we have more than 90 years of combined experience. Our entire staff is committed to providing quality service to clients at a reasonable cost.


Trust in our experience

The North Bethesda, Maryland offices of Tyrrell Mason & Pillote, P.C. are located one-quarter mile from the White Flint Metro Station and along the Montgomery County Ride On bus route. If you cannot come to us, we will gladly come to you. Call us at 301-984-4790 or contact us online to schedule an appointment. We look forward to discussing your needs with you.

Serving Maryland and Washington, D.C.

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Office Location
  • Rockville Office
    6116 Executive Boulevard
    Suite 500
    North Bethesda, Maryland 20852
    Phone: 301-984-4790
    Fax: 301-770-5202