Cassandra Roth is an experienced trial lawyer who represents companies in high-stakes intellectual property and commercial disputes. She focuses on matters involving IP assets (patents, trade secrets, trademarks, and copyrights), false advertising, unfair and deceptive practices, and business torts. Cassandra regularly counsels clients on advertising practices as well as matters involving litigation. She represents clients in the federal district and appellate courts, as well as before the International Trade Commission (ITC) and the Patent Trial and Appeal Board (PTAB).Cassandra’s clients include a wide variety of technology companies, prominent medical device and pharmaceutical companies, and universities. Clients appreciate her creative and practical approach, the depth of her knowledge of the law, and her responsiveness.

Cassandra also maintains a robust pro bono practice, representing clients in a variety of state and federal proceedings, including before the U.S. Court of Appeals for the Ninth Circuit. She was awarded a Pro Bono Publico Award in 2015 by the Legal Aid Society of New York City for her work on family law matters.

Prior to joining Ropes & Gray LLP, she clerked for the Honorable William H. Pauley III of the United States District Court for the Southern District of New York. Before law school, Cassandra worked at a Boston-area start-up, where she developed disease-specific models of neuronal systems. Cassandra graduated from MIT with degrees from the Department of Earth, Atmospheric, and Planetary Science and the Department of Urban Studies and Planning. She has experience programming in MATLAB, Fortran, and Ada.

Cassandra regularly writes and comments on intellectual property and false advertising matters.


  • Carbyne Biometrics v. A Major Multinational Consumer Electronics Company (WDTX): Defending a major multinational consumer electronics company in a six-patent suit concerning authentication and fraud reduction.
  • Collision Communications, Inc. v. Nokia Corp.: Represented Collision Communications in a breach of contract and promissory estoppel case against Nokia. After a two-week trial, the jury found for Collision on all counts and awarded $23 million in damages.
  • Collision Communications, Inc. v. Nokia Corp. et al.; Collision Communications, Inc. v. Telefonaktiebolaget LM Ericsson et al. (EDTX, DNH): Represented Collision Communications in two actions in the Eastern District of Texas involving infringement of multiple 3G and 4G/LTE patents by Nokia’s and Ericsson’s cellular infrastructure products and services, where we obtained highly favorable settlements for Collision on the eve of trial.
  • Aire Technologies v. A Major Multinational Consumer Electronics Company (WDTX): Defending a major multinational consumer electronics company in a three-patent suit concerning NFC and mobile payment technologies.
  • A Global Leader in Medical Technology, Services, and Solutions (PTAB, CAFC): Representing a global leader in medical technology, services, and solutions in multiple IPRs relating to trans-catheter replacement heart valves.
  • A Leading Consumer Electronics Company (EDTX): Represented a leading consumer electronics company in a two-patent litigation.
  • MMAS Research, LLC et al. v. The Regents of the University of California (CDCA): Defended The Regents in copyright and trademark litigation related to a diagnostic tool.
  • Certain Wireless Mesh Networking Products and Related Components Thereof, 337-TA-1131 (ITC): Successfully secured a Final Determination finding no violation of Section 337 by Emerson Electric in a four-patent ITC investigation brought by non-practicing entity SIPCO against Emerson’s WirelessHART-compatible industrial wireless technology and infrastructure products.
  • Global Life Sciences Company (DNJ): Represented a global life sciences company in a Lanham Act lawsuit concerning a competitor’s misleading advertising about insurance coverage for the parties’ respective prescription drug products
  • Arvest Bank v. RSA Security, Inc. (DMass) – Defended EMC and RSA in breach-of-contract action concerning indemnification for an underlying patent infringement suit.
  • Veeco Instruments Inc. v. SGL Carbon, LLC et al. (EDNY/ CAFC) –Successfully obtained a preliminary injunction on behalf of Veeco prohibiting SGL from supplying infringing wafer carriers to Veeco’s chief MOCVD competitor in a two-patent infringement case related to removable wafer carriers used in the production of LEDs in Metal-Organic Chemical Vapor Deposition (MOCVD) systems. The case settled while on appeal.
  • Rovi Technologies Corporation (PTAB): Defended Rovi/TiVo in connection with inter partes reviews challenging patents related to interactive television program guides.
  • A Designer Shoe Company (SDFL): Represented plaintiff in action against former high-level IT manager asserting claims of trade secret misappropriation, CFAA violations, and breach of employment and non-disclosure obligations. Obtained ex parte seizure order, temporary restraining order, and preliminary injunction under the federal Defend Trade Secrets Act of 2016.

Areas of Practice