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Andrew DeWeese

Partner, Litigation and Regulatory Attorney

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Andrew founded the Oregon Cannabis Law Group in 2014 and merged with Green Light Law Group in 2019. He has long been on the forefront of the novel legal issues concerning the emerging cannabis industry. Andrew represents and advises cannabis business clients on state law compliance and licensing issues, as well as in civil litigation and private arbitration. In 2019, Andrew led the Green Light Law Group legal team that prevailed against the Oregon Liquor Control Commission in the Oregon Court of Appeals, striking down Oregon’s short-lived ban on flavored cannabis vape products.

Andrew was born and raised in Port Townsend, Washington. He graduated cum laude in 2008 from the University of Miami School of Law, and practiced in Miami, Florida until he moved to Portland in 2013.

Andrew holds a bachelor’s degree and a Performer Diploma from the Indiana University School of Music and was formerly a professional-caliber orchestral violist who has toured throughout Europe and the Americas. His primary instrument is the “Eclipse” viola, which he commissioned from the luthier Thomas Gaetano Sparks. He enjoys spending time with his wife and two kids, chasing down old dime store novels and rare 1970’s sci-fi first editions, and sampling typical beverages of the region.

Professional Activities
Chairperson – Cannabis Law Section, Oregon State Bar (2020)
Founding Officer – Cannabis Law Section, Oregon State Bar (2015 – Present)
Member – Judicial Screening Committee, Multnomah County Bar Association

Member – New York Cannabis Growers & Processors Association Policy Committee

Founding Member – The Psychedelic Bar Association

Professional Recognitions
SuperLawyers “Super Lawyer” (2020-2022)
SuperLawyers Oregon “Rising Star” (2016-2018)
SuperLawyers Florida “Rising Star” (2012-2014)
Selected to the Global Top 200 Cannabis Lawyers Directory

The United States Supreme Court
The United States Eleventh Circuit Court of Appeals
The United States District Courts of Oregon
The United States District Courts of The Southern District of Florida

Andrew DeWeese

Andrew's Blog Posts

Myths facts LOW WIDE

Horizons NW 2022, Dispelling Myths & Celebrating Measure 109

The Horizons Northwest psychedelic conference just wrapped following an amazing series of events bringing together many of the brightest and…

HECC License PSI

HECC Agency Staff Recommend Rule Changes to Facilitate the Certification of Psilocybin Facilitator Training Programs

On August 11, 2022, the staff of Oregon’s Higher Education Coordinating Commission (“HECC”) released a memorandum outlining their recommended changes…

BREAKING NEWS covid cbd wide

BREAKING NEWS: OSU Study Finds CBGA and CBDA Block COVID-19 Virus

Researchers at Oregon State University have found that cannabigerolic acid (CBGA) and cannabidiolic acid (CBDA) “bind to the SARS-CoV-2 spike…

Effective deposition blog wide

How to Take an Effective Deposition in a Cannabis Case

So you’re an experienced litigator facing your first deposition in a cannabis case. Maybe you’re representing a wrongfully terminated employee…