Teresa Casillas*

Of Counsel

Teresa Casillas

Teresa Casillas*

Of Counsel

Teresa Casillas specializes in domestic and international corporate, natural resources and immigration law.  She has represented clients in connection with the acquisition, maintenance, development and disposition of mineral properties in both domestic and foreign jurisdictions.  Teresa has counseled companies at every level from start-up through successful sales.

Teresa practiced at the international law firm, Dorsey & Whitney, and national law firm, Ballard Spahr Andrews & Ingersoll before moving to an in-house position with RE/MAX LLC.  In 2011 she began her solo practice as an international corporate attorney and business advisor and has successfully served as virtual general counsel for domestic and foreign clients with business operations in Colorado.

Practice Areas

  • Corporate governance and compliance matters
  • Domestic private mergers and acquisitions
  • Mining joint ventures
  • Immigration
  • Real Estate

Bar Admissions

  • Colorado


  • Juris Doctor, University of Denver Sturm College of Law – 1996
  • Bachelor of Arts, University of Colorado at Boulder – 1987

Professional Affiliations

  • Colorado Bar Association
  • Colorado Hispanic Bar Association
  • Denver Bar Association
  • Rocky Mountain Mineral Law Foundation

Honors & Awards

  • Nominee, American Marshall Memorial Fellowship – 2005
  • Fellowship, Colorado Lawyers Committee, Taylor Ranch Litigation – 1996
  • Class Speaker, University of Denver Sturm College of Law Graduation Ceremony – 1996

Community Activities & Personal Interests

Teresa has volunteered with Project Homeless Connect since 2000 and currently serves on the Board of the Wheat Ridge Business Association. She previously served as a Board member for the Colorado Hispanic Bar Association, the Association of Corporate Counsel of Colorado and Academia Ana Marie Sandoval Elementary School. She has been involved in organizations such as the International Mining Professionals Society, Denver Gold Group, and Our Courts, Colorado.

Industries Served

  • Natural Resources
  • Consulting & Professional Services Franchising
  • Retail

Recent Representative Transactions

  • Serve as virtual GC to US based subsidiaries of foreign companies and small local start-ups
  • Establish various business entities in Mexico and other foreign jurisdictions
  • Conduct mineral due diligence, prepare mineral title opinions and mining claim conveyance documents, handle county and federal filings of mineral rights
  • Represent executive company transfers and their families on the Immigration application of L1 and L2
  • Negotiate and structure regional and unit franchise agreements for US real estate franchisor in foreign jurisdictions

* Teresa Casillas is an independent contractor, and is not an employee of or otherwise associated with the firm. Teresa Casillas instead provides services to the firm and its clients on a project basis.

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