Shane Oka



  • Los Angeles


Shane Oka consults and provides expert testimony on valuation and damages issues. Mr. Oka has extensive expertise with damages related to intellectual property, breach of contract, and securities class certification.

Intellectual property

Mr. Oka is a leader in Cornerstone Research’s intellectual property practice. He has deep expertise in quantifying patent damages, including lost profits and reasonable royalties, and in damages apportionment. He consults on fair, reasonable, and non-discriminatory (FRAND) and non-FRAND royalty damages in various industries, including consumer products, pharmaceuticals, technology, and telecommunications. Mr. Oka has extensive experience in trade secrets damages cases and has also supported experts in trademark and copyright damages matters.

Breach of contract

As an expert witness, Mr. Oka has provided testimony on breach of contract issues. He has conducted complex damages modeling and financial forecasting in various industries, including commercial real estate, consumer technology, energy, medical devices, and pharmaceuticals. Mr. Oka also consults with counsel on the economic implications of breaching various forms of commercial relationships (such as buyer/seller, commercial partnerships, and employer/employee), especially where the alleged breach gives rise to unanticipated commercial competition.


Mr. Oka consults on economic issues related to securities litigation. He has significant experience in addressing allegations of Rule 10b-5 violations. He has analyzed market efficiency, Comcast, and price impact issues in the class certification context, and evaluated loss causation and damages at the merits stage. Mr. Oka also consults on Section 11 negative causation defenses. He has particular expertise in estimating clients’ likely damages exposure in connection with securities claims and has supported clients to determine settlement strategies.

Press Release

Cornerstone Research Promotes Ten Senior Staff to Principal


In re General Motors LLC Ignition Switch Litigation

  • “Nuts & Bolts: SEPs & Antitrust,” American Bar Association, 13 February 2023