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Daniel Lis

Daniel Lis

Senior Counsel


  • Litigation
  • Trade Secrets & Employee Mobility
  • Appellate Law
  • Class Actions

WSG Practice Industries


Oregon, U.S.A.


Daniel (Danny) Lis is a Senior Counsel in Buchalter’s Portland office and a member of the Firm’s Litigation Practice Group. Mr. Lis concentrates his practice on complex commercial litigation and dispute resolution. He has over ten years of experience representing investors and businesses in a broad array of commercial cases throughout the country and successfully handling the related appeals. His experience also includes counseling commercial clients on legal obligations and strategies, regulatory compliance, and government investigations.

Examples of clients that Mr. Lis has represented include pharmaceutical and dietary supplement companies, cannabis and CBD companies, food manufacturers, high net-worth investors in oil field and real estate deals, LiDAR technology companies, and medical billing, software, and equipment manufacturing and supply companies. Mr. Lis has extensive experience litigating claims for violations of state consumer protection statutes, trade secret misappropriation, breach of fiduciary duty, breach of contract, violations of the civil RICO Act, fraud, and tortious interference.  He has litigated cases in Oregon, Washington, California, Illinois, Michigan, Rhode Island, and New Jersey.

In 2017 and 2018, Mr. Lis was named to the Oregon Rising Star list by Super Lawyers.

Bar Admissions

  • Oregon
  • Washington
  • Illinois


  • John Marshall Law School
  • DePaul University
Areas of Practice

Appellate Law | Class Actions | Litigation | Trade Secrets & Employee Mobility

Professional Career

Significant Accomplishments

  • Represented casinos as plaintiffs against horse racing tracks in civil RICO, civil conspiracy, and unjust enrichment case related to defendants’ conspiracy to bribe former Illinois Governor. Obtained jury verdict for $25.9 million in actual damages (trebled to $77.8 million) and $4 million in punitive damages.
  • Defended national pharmacy chain against class action lawsuit alleging violations of various consumer protection laws related to representations on label of store-branded vitamin supplements. Obtained dismissal of all counts with prejudice.
  • Represented investors in civil RICO, breach of contract, and breach of fiduciary duty lawsuit related to investment advisor wrongfully taking proceeds from oil and gas field and real estate investments. Defended related breach of contract counterclaim.  Case settled favorably shortly before scheduled trial, after favorable ruling on defendant’s motion for summary judgment.
  • Defended banking-technology evaluation company against breach of contract, trade secret misappropriation, unfair business practices, fraud, and declaratory judgment claims arising out of dispute over separation of business partnership. Case settled favorably after victory on demurrer.
  • Represented national medical-equipment supply and billing company in tortuous interference with employment contracts, breach of fiduciary duty, and trade secret lawsuit related to allegations that client’s former manager used the business’ employees and resources to start competing business. Defended against manager’s counterclaim for defamation.  Obtained favorable settlement after close of fact discovery.
  • Prevailed as lead appellate counsel in Seventh Circuit Court of Appeals defending village against Section 1983 and negligent hiring claims related to allegations of improper police investigation. Court affirmed dismissal of complaint with prejudice.
  • Counseled education-consulting companies through inspector general investigation related to allegations of bribery in obtaining government contracts. Advised on potential liability and duties in responding to information requests.

WSG's members are independent firms and are not affiliated in the joint practice of professional services. Each member exercises its own individual judgments on all client matters.

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