Jason Cassady is one of the country’s leading trial lawyers, focusing on patent infringement and complex commercial litigation for both plaintiffs and defendants. He represents clients before federal judges, juries, and the International Trade Commission in cases involving digital media, telecommunications, data storage, semiconductors, computer networking, medical devices, banking technology, video game software, standards-essential disputes, and many others.
Jason has managed global litigation strategies and helped clients secure several billion dollars in verdicts, judgments, and settlements. His trial victories in patent infringement cases include a multimillion-dollar verdict against Apple, which was entered as a $454 million judgment that the company paid following its unsuccessful appeals to the Federal Circuit and the U.S. Supreme Court. Jason’s additional litigation highlights include a trial victory and a $173 million judgment against Twitter Inc., now X Corp., in another closely watched case. He also recently secured a Federal Circuit ruling that fully affirmed a seven-figure infringement verdict he secured as lead trial counsel against LG Electronics. The ruling also upheld a running royalty of $6.75 per infringing NextGen television manufactured by the company.
In addition to trying and winning seven jury trials against Apple, Jason has guided individual inventors, emerging technology companies, and established corporations to significant courtroom victories and/or successful case outcomes against Microsoft, Google, Nintendo, Intel Corp, BMW, Volkswagen, IBM, Cordis, ReedHycalog, Avaya, Mitel, Samsung, Square Inc., Advanced Micro Devices, and others.
Jason is one of the rare lawyers to win the year’s top patent infringement verdict in Texas on multiple occasions. Based on his decades of success in intellectual property disputes, he has been nominated by clients and competing lawyers in many of the leading guides to the world’s top legal professionals, including Chambers USA, The Best Lawyers in America, Texas Super Lawyers, and the Lawdragon 500 Leading Litigators in America.
He has represented parties in a wide range of additional areas, including drill bit technology, balloon angioplasty catheters, and electronic checking. Outside his commercial practice, his pro bono work includes trying and winning numerous cases on behalf of individual criminal defendants.
Southern Methodist University, Dedman School of Law
J.D., cum laude, 2004.
The University of Texas
B.A., Sociology, 2000
Chambers USA – Intellectual Property (2024-present)
Managing IP – Impact Case of the Year (2025)
Managing IP – Patent Disputes Firm of the Year (South) (2025)
Managing IP – IP Stars (2024)
Member, Dallas Committee on Foreign Relations
Lawdragon 500 Leading Litigators in America (2023-present)
Texas Verdicts Hall of Fame (2019) – Texas Lawyer newspaper
Best Lawyers in America (2017-present) – Best Lawyers
Texas Super Lawyers (2019-present) – Thomson Reuters
20 Texas Lawyers on the Rise (2016) – Texas Lawyer
Texas Super Lawyers Rising Stars (2008-2018) – Thomson Reuters
Texas Super Lawyers Rising Stars Top 100 (2017) – Thomson Reuters
U.S. Firm to Watch (2018) – Managing Intellectual Property magazine
Texas Intellectual Property Litigation Department of the Year (2017) –Texas Lawyer
#1 U.S. Plaintiffs’ Patent Firm – IAM Patent 1000 – The World’s Leading Patent Professionals
Best Law Firms (2017-present) – The Best Lawyers in America/U.S. News & World Report
Best Lawyers in Dallas – D Magazine (2016-present)
Top 100 U.S. Verdicts of 2016 (3 verdicts) – The National Law Journal/VerdictSearch
#1 Texas Intellectual Property Verdict (2016) – The National Law Journal/VerdictSearch
Top 50 Recoveries (2015-2016) – The National Law Journal
Top Patent Damage Awards Won Since 2000 (2015) – Law360
Top 100 U.S. Verdicts of 2015 – The National Law Journal/VerdictSearch
#1 Texas Intellectual Property Verdict (2015) – The National Law Journal/VerdictSearch
VirnetX Inc. v. Apple Inc.
Caldwell Cassady & Curry represents VirnetX in the company’s patent infringement litigation against technology giant Apple Inc. In a dispute that the Eastern District of Texas trial court said has attained Dickensian proportions, Caldwell Cassady & Curry has helped VirnetX win favorable verdicts in five separate trials where each jury awarded over $300 million in damages. In late 2012, we helped VirnetX win a $368 million verdict when a federal jury determined that Apple had infringed four VirnetX patents to produce the VPN On Demand and FaceTime features in the popular iPhone and other Apple products. After the case was sent back for a new trial on damages, we won again by securing a $625 million verdict for VirnetX in February 2016 after jurors in the U.S. District Court for the Eastern District of Texas found that Apple continued to infringe VirnetX’s patents following the first trial to produce the FaceTime and re-designed VPN On Demand features. The jury also found that Apple’s infringement was willful regarding FaceTime and VPN on Demand. The court later vacated its order to consolidate the matters and set the cases for two separate jury trials focusing on different versions of Apple features. In the first new trial heard in September 2016 pertaining to the earlier generations of products, we helped VirnetX win a $302 million verdict against Apple before a new Eastern District jury. The verdict was entered as a $439.7 million judgment in September 2017 and affirmed on appeal by the U.S. Court of Appeals for the Federal Circuit. In the second new trial heard in April 2018 addressing the newer generations of products, a different Eastern District jury awarded a unanimous verdict of $502.6 million in favor of VirnetX after finding Apple’s infringement was willful. After that verdict was sent back for a new trial on damages, a final trial was held in Fall 2020, again in the Eastern District of Texas. In that trial, we secured a $502.8 million jury verdict following the Federal Circuit’s affirmance of the 2018 finding that Apple’s VPN On Demand in iOS versions 7.0 and later infringed VirnetX’s patents. The district court later denied Apple’s request for a new trial and entered the jury’s verdict in favor of VirnetX as a final judgment.
Constellation Designs v. LG Electronics
Caldwell Cassady & Curry won a $1.7 million patent infringement verdict in July 2023 for Constellation Designs against LG Electronics Inc. The jury in the U.S. District Court for the Eastern District of Texas affirmed Constellation Designs’ patented technology covering crucial elements for the emerging ATSC 3.0 (NextGen TV) standard for television broadcasts. The award was based on $6.72 per unit for each infringing LG Electronics product the company had sold.
Anascape, Ltd. v Nintendo et al.
Mr. Cassady represented Anascape in its patent infringement lawsuit against Microsoft and Nintendo involving video game controller technology. After a two week trial in the Eastern District of Texas, Anascape obtained a jury verdict against Nintendo. Microsoft and Anascape reached a confidential settlement on the eve of trial.
VirnetX, Inc. v. Microsoft Corp.
As lead trial counsel, Mr. Cassady represented VirnetX in its multi staged patent litigation and licensing with Microsoft. In 2011, a jury awarded VirnetX $105,000,000 in its verdict and found that Microsoft’s infringement had been willful. That case settled after VirnetX moved for a permanent injunction. In subsequent litigation involving additional infringement assertions, Microsoft settled before trial.
VidStream v. Twitter
Jason was a member of the Caldwell Cassady & Curry trial team that won a $105 million verdict in April 2025 for patent holder VidStream, LLC, in a long-running lawsuit against social media giant Twitter, Inc., now operating as X Corp.The trial in the U.S. District Court for the Northern District of Texas focused on VidStream’s U.S. Patent No. 8,464,304, which covers server and client technology designed for the efficient online sharing of videos. Jurors heard evidence for six days before finding that Twitter had not only infringed VidStream’s patent but had done so willfully. The trial court issued a final judgment in November 2025 totaling over $172 million, including prejudgment interest. The case is VidStream, LLC. v. Twitter, Inc., No. 3:16-cv-00764.
Bedrock Computer Techs. v. Google Inc.
Mr. Cassady, as trial counsel, represented Bedrock in a suit filed against Google for patent infringement involving methods for efficiently removing expired data from information storage and retrieval systems. The case settled shortly after the jury awarded $5 million in favor of Bedrock.
Continental Circuits v. Intel
Caldwell Cassady & Curry successfully represented plaintiff Continental Circuits in its patent infringement case against Intel Corporation and its Japanese supplier, Ibiden. The lawsuit filed in the U.S. District Court for the District of Arizona involved Intel’s semiconductor packaging products. Midway through the litigation, the firm successfully appealed a claim construction to the Federal Circuit, which reversed the district court’s decision and found in favor of Continental Circuits. On remand, the parties resolved the dispute prior to trial.
Dr. Robert Morley v. Square Inc.
Mr. Cassady was a member of the Caldwell Cassady & Curry team that successfully represented Washington University in St. Louis Professor Robert Morley in his lawsuit against Square, Inc., Jack Dorsey, and Jim McKelvey. The lawsuit focused on the defendants’ patent infringement and breach of fiduciary duty, misappropriation of trade secrets, exclusion of Dr. Morley from Square, and related business torts after Dr. Morley invented the famous Square credit card reader and helped create the company. The case in the U.S. District Court for the Eastern District of Missouri concluded after the parties reached a mutually agreeable settlement in 2016.
ZitoVault v. Amazon
Caldwell Cassady & Curry represented ZitoVault in its patent infringement lawsuit against e-commerce giant Amazon. The firm helped ZitoVault resolve the case with a confidential settlement in 2016 after Apple unsuccessfully challenged the client’s cybersecurity patent before the U.S. Court of Appeals for the Federal Circuit and a prior challenge before the Patent Trial and Appeal Board.
Huawei Technologies Co. Ltd. v. Verizon Communications Inc.
Caldwell Cassady & Curry successfully represented Huawei Technologies in the company’s patent infringement lawsuits against Verizon Communications in the U.S. District Courts for the Eastern and Western Districts of Texas. Jason Cassady helped lead the firm’s trial team through three days of jury presentations in the Eastern District case before the parties agreed to settle both lawsuits under confidential terms in July 2021.
ZitoVault v. International Business Machines (IBM)
Caldwell Cassady & Curry successfully represented ZitoVault in its patent infringement lawsuit against the technology corporation IBM. The case was resolved in 2018 in the U.S. District Court for the Northern District of Texas, shortly before IBM signed a licensing agreement covering ZitoVault’s patent for computer network encryption and decryption software.
Neo Wireless MDL
Caldwell Cassady & Curry represents Neo Wireless in multidistrict litigation pending before the U.S. District Court for the Eastern District of Michigan. The lawsuits, initially filed in seven different district courts and then consolidated at Neo’s request, involve a series of patents covering technology for in-vehicle cellular communications, including infringement claims against automakers Tesla, General Motors, Toyota, Ford, Honda, Fiat Chrysler, Volkswagen, Mercedes Benz, and Nissan. The claims against Volkswagen and Mercedes were settled in 2023.
Grace v. Apple
Firm attorneys represented a class of plaintiffs in a high-profile consumer class action case in the U.S. District Court for the Northern District of California based on allegations that Apple Inc. intentionally broke the popular FaceTime video chat feature for millions of customers. The firm successfully defended the affected customers against Apple’s multiple attempts to dismiss the case and helped secure class certification for all California class plaintiffs in 2018. After the District Court denied Apple’s pre-trial Motion for Summary Judgment, the case settled on favorable terms.
Adeia Semiconductor Patent Litigation
Caldwell Cassady & Curry represents California-based Adeia Semiconductor Bonding Technologies Inc. in patent enforcement and licensing matters related to its extensive patent portfolio. In March 2026, the firm helped Adeia successfully conclude two patent infringement lawsuits with multi-year licensing agreements with Advanced Micro Devices, one of the world’s largest semiconductor chip providers.
Caldwell Cassady & Curry resolved another patent infringement claim for Adeia in December 2025, when the company announced long-term licensing agreements covering its media patents with The Walt Disney Company, ESPN, Hulu, and other Disney subsidiaries.
ReedHycalog v. US Synthetics
Mr. Cassady represented US Synthetics in defending ReedHycalog’s allegations of patent infringement litigation regarding diamond cutter technology.
