Matthew C. Arentsen

Matthew C. Arentsen



Extensive experience defending consumer finance and marketing class actions as well as government investigations. Trusted advisor to companies across industries for TCPA and telemarketing compliance and advocacy. Skilled at developing and implementing concrete solutions to mitigate litigation and regulatory risk associated with companies’ consumer contacts and online commerce.

Matt Arentsen is a litigator whose practice focuses on consumer law—with a particular emphasis on the Telephone Consumer Protection Act (TCPA). From representing federal loan servicers in class action litigation and FCC rulemaking proceedings to advising national retailers and hotel chains on marketing compliance, Matt handles TCPA and telemarketing issues for industry clients on a daily basis. Matt also defends companies in class and individual actions throughout the country involving myriad other federal and state consumer finance and marketing laws, including the Fair Credit Reporting Act (FCRA), the Fair Debt Collection Practices Act (FDCPA), and state unfair and deceptive acts and practices (UDAP) statutes. Additionally, Matt has extensive experience defending consumer protection investigations by the Consumer Financial Protection Bureau (CFPB) and state attorneys general. Matt assists clients across many industries in developing and implementing enforceable online terms of use to mitigate litigation and regulatory exposure.

Whether litigating cases, counseling on regulatory risk, advocating at federal agencies or responding to government examinations, Matt always keeps his clients’ business objectives and bottom line at front of mind. Matt’s informed and diligent approach to addressing complex consumer issues propels him to consistently deliver best outcomes and achieve practical results.

Representative Matters

Recent Experience

  • Brownstein delivered an early victory to an international luxury hotel company in a class action lawsuit over alleged deceptive room at the company’s California locations. Plaintiffs accused the hotel chain of misleading consumers by adding undisclosed resort fees. Following removal to federal court, Brownstein’s team delivered a successful motion to dismiss, resulting in a full dismissal with prejudice. Given that this case was not the first of its kind, and followed a warning to the entire hotel industry by the FTC that advertised listings should include a room’s nightly cost as well as any resort fees, this victory was especially noteworthy.

  • Developed and conducted a consumer protection audit for a for-profit education company specializing in technology and coding bootcamps. The audit entailed reviewing every consumer-facing aspect of the company’s business including its compliance with state and federal consumer protection laws. Following the audit, conducted multiple training sessions for all of the company’s consumer-facing employees and management.

  • Obtained summary judgment in favor of defendant loan servicer on all claims in action brought by borrower for alleged violations of the Telephone Consumer Protection Act and the Fair Debt Collection Practices Act in connection with serving of loans.

  • Counsel to investment management client in defending state and federal class action lawsuits brought by music festival ticket purchasers and vendors seeking damages for alleged breaches of contract, unjust enrichment, and deceptive trade practices in connection with the cancellation of the event.

  • On behalf of large, privately-held oil and gas company, obtained dismissal with prejudice at motion to dismiss stage of all claims in shareholder derivative action. On appeal.

  • Represented client in putative class action lawsuit regarding disputed foreclosure practices and alleged violations of the Colorado Consumer Protection Act, the Fair Debt Collection Practices Act, and the Colorado Antitrust Act.

Insights & Publications



  • J.D., 2012, University of Denver Sturm College of Law, Order of St. Ives
  • B.A., 2004, University of Colorado

Previous Experience

Judicial Law Clerk for the Honorable James S. Casebolt, Colorado Court of Appeals


  • Colorado
  • U.S. Court of Appeals, Tenth Circuit
  • U.S. District Court, District of Colorado
  • U.S. District Court, Eastern District of Missouri

Community Involvement


Board of Directors, Bridge House

Board of Trustees, Metro Caring



Best Lawyers: Ones to Watch in America, 2021-2024

Editor in Chief, Denver University Law Review

Scholastic Excellence Award—Trial Tactics