John R. Posthumus
About John R. Posthumus
John R. Posthumus is a lawyer based in Denver, CO and has been recognized in The Best Lawyers in America® since 2018. John R. Posthumus is recognized in the following practice areas:
- Denver, Colorado
- Litigation - Intellectual Property
- Litigation - Patent
Current Firm: Polsinelli PC
Education: University of New Hampshire, Franklin Pierce School of Law, J.D., graduated 1991
Location: Denver, CO
Nearby Lawyers
Tracy Ashmore is a shareholder at Robinson Waters & O’Dorisio, P.C. . She represents clients in competition law and business-law trials, with an emphasis on antitrust, commercial, real estate, and insurance coverage disputes. Ms. Ashmore also has many years of experience protecting the rights of consumers, lenders and developers. As an experienced trial lawyer, Ms. Ashmore is highly attuned to the potential costs and risks of litigation. While she enthusiastically takes cases to tri...
Jennifer H. Weddle is the Co-Chair of Greenberg Traurig LLP's American Indian Law Practice and has wide-ranging experience in Indian law, handling a variety of matters for tribal and non-tribal clients. She has a dynamic, inter-disciplinary practice that centers on providing solutions for complex inter-jurisdictional problems. Much of her practice focuses in the areas of tribal jurisdiction, tribal economic development and natural resources development on tribal lands. Jennifer also has U.S. ...
More than a decade of construction litigation and contract drafting experience. Provides practical solutions to clients’ business challenges. Experience ranges from relatively small disputes to multi-million-dollar claims in state courts, federal courts and arbitration. In his construction-focused practice, Kevin Walsh provides developers and construction professionals with a wide range of legal services, including contract drafting and negotiation; dispute avoidance and de-escalation; ...
David’s practice focuses on healthcare, commercial and insurance disputes. In the healthcare field, David has represented clients in litigation, regulatory matters, employment, and business disputes. With over twenty years of experience, David has gained an in-depth understanding and appreciation of the delivery of healthcare as well as the field of medicine. He represents health care facilities including nursing homes, rehabilitation facilities and assisted living residences, as well a...
C. Ben Huber is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law. C. Ben, who practices law in Denver, Colorado, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which C. Ben is held by other top lawyers in the same geographic and legal practice area.
Expertise spans land use and zoning, general real estate matters and urban renewal and public finance. Over a decade of real estate experience. Brings strong local ties to Colorado-focused projects. With an emphasis on land use and entitlements, Caitlin’s practice spans all areas of real estate development including acquisitions and dispositions, zoning and development as well as serving as special and general counsel to various governmental and quasi-governmental entities. Working prim...
Brady McShane provides legal advice to clients on political, regulatory, and environmental issues involved in developing property in California and Colorado. His practice focuses on securing land use approvals, regulatory permits, and environmental clearance from government agencies, directing public policy and government relations strategies and counseling clients on land use issues pertaining to the acquisition, disposition, and financing of properties. Brady’s broad range of land use...
Edward C. Moss is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law Arbitration and Family Law Mediation. Edward C., 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 Edward C. is held by other top lawyers in the same geographic and legal practice area.
Cheryl F. Smith earned her Bachelor of Arts in Economics and Political Science at Lehigh University and her J.D. from New York Law School, where she earned the public service certificate and was on the Dean’s List. Prior to joining RWO, Cheryl worked in boutique law firms in New York City. Cheryl practices in the area of domestic relations. She understands that going through a divorce is difficult and approaches every case with the client’s best interest as her main focus. Her wor...
Mari Perczak is the co-practice group leader of the Construction Defects department at Burg Simpson. She and her department have achieved Tier 1 status by US News and World Report, which is the highest-ranking available. Ms. Perczak has more than thirty years of experience as a Colorado trial lawyer and has successfully handled many large construction defect cases for Colorado homeowners and homeowner associations. In 2020, Ms. Perczak was lead trial counsel in a lengthy arbitration where she...
Explore and Learn
2026 Best Lawyers Awards: Recognizing Legal Talent Across the United States
by Jamilla Tabbara
The 2026 editions highlight the top 5% of U.S. attorneys, showcase emerging practice areas and reveal trends shaping the nation’s legal profession.
Gun Rights for Convicted Felons? The DOJ Says It's Time.
by Bryan Driscoll
It's more than an administrative reopening of a long-dormant issue; it's a test of how the law reconciles the right to bear arms with protecting the public.
2026 Best Lawyers Awards in Canada: Marking 20 Years of Excellence
by Jamilla Tabbara
Honoring Canada’s most respected lawyers and spotlighting the next generation shaping the future of law.
How to Sue for Defamation: Costs, Process and What to Expect
by Bryan Driscoll
Learn the legal standards, costs and steps involved when you sue for defamation, including the difference between libel and slander.
Best Lawyers 2026: Discover the Honorees in Brazil, Mexico, Portugal, South Africa and Spain
by Jamilla Tabbara
A growing international network of recognized legal professionals.
The Family Law Loophole That Lets Sex Offenders Parent Kids
by Bryan Driscoll
Is the state's surrogacy framework putting children at risk?
Holiday Pay Explained: Federal Rules and Employer Policies
by Bryan Driscoll
Understand how paid holidays work, when employers must follow their policies and when legal guidance may be necessary.
How to Choose a Good Lawyer: Tips, Traits and Questions to Ask
by Laurie Villanueva
A Practical Guide for Your First-Time Hiring a Lawyer
Unenforceable HOA Rules: What Homeowners Can Do About Illegal HOA Actions
by Bryan Driscoll
Not every HOA rule is legal. Learn how to recognize and fight unenforceable HOA rules that overstep the law.