Ranked in 1 Practice Areas
4

Band 4

Cannabis Law: Western United States

USA - Nationwide

2 Years Ranked

About

Provided by Andrew DeWeese

USA

Practice Areas

Cannabis Law, Administrative Litigation, Commercial & Landlord/Tenant, Litigation, Receiverships, Second Opinion / Repair Counsel, Shareholder & Partnership Disputes, Pesticide Drift & Crop Contamination, Employment, Discrimination, Contracts, and Crisis Management.

Career

Andrew DeWeese has litigated hundreds of matters, primarily involving trials and private arbitration, over the course of his distinguished career, and is nationally recognized as an authority on cannabis litigation.

DeWeese is a founder of the Oregon State Bar Cannabis and Psychedelics Law Section, and as one of the longest-standing and most prominent cannabis lawyers in Oregon, has been quoted in local and national publications such as the Oregonian, Willamette Week, Portland Business Journal, MJBizDaily, Marijuana Moment, and Cannabis Law Report, and was featured in NPR’s Planet Money podcast.

DeWeese is widely regarded as an authority on cannabis law and regulation. He has presented continuing legal education courses to other lawyers in the area of cannabis law, and has advised cannabis industry trade associations and key figures in Oregon and New York State.

DeWeese began his legal career in Miami, slugging it out in the state and federal courts in South Florida. In 2013 DeWeese opened his law practice in Oregon. DeWeese was subsequently a partner at Green Light Law Group for three years, leaving in early 2023 to start this firm with his long-time friend and work partner Steph Barnhart joining him as paralegal and operations manager.

Professional Memberships

- Oregon State Bar Cannabis & Psychedelics Law Section - Founding Member

- Oregon Trial Lawyers Association

- Multnomah Bar Association

Publications

Feature in: NPR's Planet Money, MJ Biz Daily, Marijuana Moment, Cannabis Law Report, Willamette Week.

Personal

In his spare time, DeWeese spends time with his wife and two children, collects and reads rare books, and sails the Columbia River. Prior to entering law school, DeWeese was a professional orchestral violist.

Industry Sector Expertise

Read about our proven results for clients at: https://andrewdeweese.com/

Awards

America's Top 100 High Stakes Ligitators

2022

Super Lawyer

Super Lawyers

2024

Global Top 200 Cannabis Lawyers

The Very Best Cannabis Lawyers

2025

Global Top 200 Psychedelics Lawyers

The Very Best Psychedelics Lawyers

2025

"Rising Star" 2012 to 2014 (Florida), 2016 to 2018 (Oregon)

Super Lawyers

2018

Education

University of Miami School of Law

2008

Chambers Review

Provided by Chambers

Chambers Guide to the USA

Cannabis Law: Western United States - USA - Nationwide

4
Band 4
Individual Editorial
Portland-based, Andrew DeWeese of Andrew DeWeese, PC is a renowned litigator in the cannabis market. He routinely represents high-profile clients in arbitration proceedings and regulatory litigation.

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USA - Nationwide

Cannabis Law: Western United States

4
Andrew DeWeese
4
Band 4