Gregory S. "Greg" Tamkin

Joseph W. Gren, a founding Partner of Brown Gren Abraham & McCracken, received a B.A. in history from the University of North Carolina at Chapel Hill. After graduation, he earned a Masters of Resources Law, with concentrations in environmental and energy law and policy, and received his J.D from the University of Denver Sturm College of Law in 2009. During law school, Mr. Gren was a member of the University of Denver Sturm College of Law Transportation Law Journal, a recipient of the Berr...

Doug is the chair of the Franchise and Distribution Law department at Robinson, Waters & O’Dorisio. His practice emphasizes franchising and distribution, intellectual property, commercial real estate and lending, securities, corporate, partnership, and limited liability company entities, and general commercial and business law. He is the firm’s most experienced attorney in franchise and distribution law. He provides counsel to several franchisors in both U.S. and international...

William “Bill” is the founding member of Kelly Law Partners, LLC whose commercial and employment litigation practice focuses on national and regional litigation for business clients. In response to a survey of Fortune 500 General Counsel, Bill has been named a “BTI Client Services All Star” for 4 consecutive years. He is also the sole Colorado recipient of the “Lexology Client Choice Award in Litigation” for 2017, a national survey of in-house counsel. Bill...

Twenty years serving as counsel to Apple Inc. handling its worldwide IP portfolio of more than 3,000 active assets. Built a best-in-class portfolio of over 150 patent assets for Clear in five years. Operates at the intersection of technology and business serving as a highly valued advisor. Craig Hemenway develops creative strategies that enable clients in the technology sector to leverage intellectual property assets to achieve marketplace prominence. Brownstein’s lead patent attorney a...

Kristin A. Decker is a top attorney recognized by Best Lawyers in the practice area(s) of Land Use and Zoning Law. Kristin A., who practices law in Denver, Colorado, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kristin A. is held by other top lawyers in the same geographic and legal practice area.

Phillip A. Gosch is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Phillip A., who practices law in Denver, Colorado, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Phillip A. is held by other top lawyers in the same geographic and legal practice area.

Mr. Lyman is a trial attorney with a diverse litigation practice. Based on his substantial experience defending catastrophic personal injury claims, including serious brain, spinal cord and burn injuries, Mr. Lyman guides his clients through the complex process of investigation, discovery, mediation and trial. Energy and transportation companies rely on him to defend claims of personal injury and property damage arising out of mining operations, oil and gas exploration, oil field service oper...

Jennie R. Wray is a Partner at The Harris Law Firm. Nationally recognized for in Divorce and Family Law, Attorney Wray has been named to the Colorado Super Lawyers® list of Rising Stars™ seven years in a row. Selection to the Rising Stars list is earned by just 2.5% of all practicing attorneys in each state. As passionate advocate who has dedicated her professional career to making the law clear and accessible to those who need it most, Ms. Wray has helped numerous individuals and f...

Gregory Janssen applies his business and tax background in his practice at Brownstein. He assists clients with a broad range of tax and corporate needs, including mergers and acquisitions, tax aspects of real estate transactions (including like-kind exchanges), partnership and corporation formation and taxation, tax controversies, tax-exempt organizations, tax lobbying, and other tax planning and advice for business entities and individuals.

Allison Nelson focuses her national practice on representing healthcare systems in complex real estate transactions and mergers and acquisitions. In the healthcare sector, Allison negotiates compliant sales and acquisitions, joint venture developments, and leases, ground leases, and subleases. She partners with clients to build and improve systems to manage real estate portfolios to ensure compliance with federal and state healthcare regulatory laws. She is also experienced in navigating clie...