Lee Mason

Lee Mason has represented plaintiffs and defendants in a wide range of high-stakes cases, including class actions, antitrust cases, breach of contract disputes, trade secrets cases, and products liability actions. 

Prior to joining Bartlit Beck, Lee clerked for Chief Judge Diane Wood and Judge Richard Posner on the United States Court of Appeals for the Seventh Circuit and worked as a litigation associate at Kirkland & Ellis.

Representative Matters

In re Google Play Consumer Antitrust Litigation (N.D. Cal.)
Trial and appellate counsel for consumers who used the Google Play Store to purchase apps or Google Play Billing to purchase in-app digital content on Android devices. The case alleges violations of the antitrust laws based on Google’s contractual restrictions and other conduct, resulting in a significant overcharge on the price of Android apps and in app content. Settled for significant injunctive relief and $700 million. Settlement approval pending.

For more information, click here and here.

BBP Holdco, et al v. Brunswick Corp. (Delaware Superior Court)
Trial counsel for Brunswick in a three week bench trial, defending against claims brought by the purchasers of one of Brunswick’s former businesses. Plaintiffs asserted claims for breach of contract, among others, and Brunswick denied those claims. Parties are currently waiting for a decision. 

CF Entertainment, Inc. v. The Nielsen Company (US) LLC (N.D. Ill.)
Counsel for Nielsen in contract dispute brought by CF Entertainment, a collection of cable networks that is part of comedian and entrepreneur Byron Allen's Allen Media Group. CF Entertainment’s request for preliminary injunction denied and Nielsen’s motion to dismiss granted with respect to all but a small portion of the matter. Case subsequently resolved.

Confidential Commercial Arbitration
Counsel for claimant in dispute concerning client’s investment in patent rights relating to semiconductor technology. After a three-week arbitration, the Tribunal ruled in favor of our client on all claims, granted our client all damages sought, and denied Respondents’ counterclaim, leading to an award in excess of $75 million.

Korea Advanced Institute of Science and Technology v. Paulina et al. (E.D. Wis.)
Counsel for defendant Paulina against a Korean research university alleging tortious interference and unjust enrichment related to patent litigation financing contracts. After briefing, the court granted Paulina’s motion to dismiss with prejudice, tossing out all claims against Paulina. Read coverage on Law360 here: Judge Tosses $203M Korean IP Litigation Funding Row.

Acknowledgements, Presentations, and Publications

ABA Litigation Section Annual Conference (2025): Jeopardy!: Damages in Commercial Cases

ABA Litigation Section Annual Conference (2024): Working with Experts and Expert Witness Testimony: Dos & Don’ts

Content Neutrality and Commercial Speech Doctrine After Reed v. Town of Gilbert, U. Chi. L. Rev. (2017)