Mark Ryan Thiessen

Based in Houston, Mark Ryan Thiessen handles cannabis and marijuana law matters in Texas. Thiessen earned a law degree from South Texas College of Law and University of Hawai'i at Manoa William S. Richardson School of Law and has 21 years in practice. Alongside cannabis matters, Thiessen handles driving-under-the-influence charges involving cannabis and drug charges ranging from simple possession through cultivation and distribution.

Cannabis remains largely prohibited in Texas outside narrow low-THC provisions, which keeps the practice focused on defending possession, cultivation and distribution charges and on the shifting rules for hemp-derived products. The Compassionate Use Program administers the state program. Texas is a state where a large retail trade in hemp-derived THC products has grown up alongside a very narrow medical program, and the legal status of those products has been contested repeatedly.

Thiessen also takes personal injury matters.