Litigation Lawyer You Can Trust

Aggressive & Strategic Representation

Sean McAllister

Sean McAllister is an experienced and accomplished litigator.

Sean prides himself on providing relentless representation in litigation matters, working until a client’s goals are met. Sean has handled hundreds of commercial litigation disputes and tried over 45 cases to verdict in court. Sean handles all types of commercial litigation, including:

PROFESSIONAL LICENSURE DEFENSE
  • Represented many licensed professionals, including doctors, therapists, massage therapists and others in professional licensure disciplinary cases.
  • Represented cannabis and psychedelic licensees or applicants in rules in enforcement hearings.
BREACH OF CONTRACT
  • Breach of fiduciary duties
  • Buy-Sell Agreements
  • Commercial B2B Contracts
  • Employment Agreements
  • Financing Agreements
  • Information Technology Contracts
  • Intellectual Property Related Agreements and Licenses
  • Maintenance Agreements
  • Manufacturing Agreements
  • Non-Disclosure Agreements
  • Reseller Contracts
FRAUD DISPUTES
  • Breach of fiduciary duty
  • Business misrepresentation or fraud
  • Deceptive trade practice
  • False advertising
  • Franchise fraud
  • Noncompete agreement violations
  • Tortious interference with relationships between businesses
  • Trade secret theft
  • Civil theft
INTELLECTUAL PROPERTY (IP) DISPUTES
  • Breach of confidence
  • Licensing and warranty disputes to copyright 
  • Ownership disputes
  • Patent and trademark infringement 
  • Revocation and invalidity actions.
ADMINISTRATIVE LAW LITIGATION
  • Sued Colorado Marijuana Regulators numerous times over violations of the rights of
    licensees under the administrative procedure act with claims including due process
    violations, property takings, and other related claims.
  • Sued the City of Los Angeles for changing a statute to deprive cannabis licensees of
    rights after previously granting those rights.
  • Sued the City of Denver over their arbitrary enforcement of pesticide standards.
  • Working on litigation against the DEA to obtain formal recognition of ayahuasca churches as exempt from the Controlled Substances Act.
  • Several years of federal environmental litigation under the Clean Air Act, Freedom of
    Information Act, NEPA, and other related statutes.