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Cortlin Lannin is a litigator who defends clients in high-stakes complex matters, specializing in class action cases implicating consumer protection and competition claims. He approaches his matters with efficiency and creativity, developing thoughtful strategies to resolve cases and investigations early and on favorable terms.

In the consumer space, Mr. Lannin has defended multiple cases implicating deceptive and false advertising practices under California’s Section 17200 and other states’ unfair competition laws. He also has a depth of experience with antitrust matters, having represented clients in civil class action litigation, non-public governmental investigations of both the civil and criminal variety, and internal investigations. He has had a lead role in cases and investigations implicating the high tech industry, alleged “no-poach” agreements, and price-fixing and similar cartel conduct. He is also a leader in the antitrust bar and the current chair of the Antitrust Section of the Bar Association of San Francisco.

Consumer Matters

  • Representing large national bank in multiple class action cases challenging practices and disclosures related to posting of debit-card transactions.
  • Represented a multinational consumer products company defending mislabeling and unfair competition claims across multiple jurisdictions.
  • Represented maker of joint health supplements in false advertising class action litigation.

Antitrust Matters

  • Representing major technology company in federal and state government antitrust investigations.
  • Represented multiple animation and visual effects studios in class action litigation challenging alleged “no poach” agreements.
  • Represented energy company in criminal and civil litigation concerning alleged price-fixing and bid-rigging activity directed at U.S. government.
  • Represented an automobile parts manufacturer in class action litigation alleging global price-fixing conspiracy among auto parts suppliers.
  • Represented an international airline in class action litigation concerning alleged price-fixing of passenger fares and fuel surcharges.
  • Represented online travel agency in class action litigation alleging antitrust violations in the market for online hotel bookings, achieving dismissal at pleading stage.
  • Represented multiple companies and individuals that were the subject of non-public investigations by the DOJ Antitrust Division for allegedly unlawful conduct.

Pro Bono

  • Represented an individual incarcerated in California state prison and asserting Section 1983 excessive force claims. 
  • Represented client in Ninth Circuit appeal of adverse district court ruling on employment discrimination claims.
  • Wrote and submitted amicus curiae brief in the United States Supreme Court supporting a non-discrimination policy adopted by the University of California, Hastings College of the Law.
  • Northern California Super Lawyers, Antitrust Litigation "Rising Star" (2013-2019)