Defendant
1 case as defendant.
InterDigital Patent Holdings Inc. is a subsidiary of InterDigital, Inc., a publicly traded technology research and development company headquartered in Wilmington, Delaware, and founded in 1972. InterDigital, Inc. is listed on Nasdaq under the ticker IDCC and is included in the S&P 600 index. As of July 2026, its market capitalization ranges from approximately $6.73 billion to $7.28 billion, and it employs about 430-460 individuals. In 2024, InterDigital, Inc. reported a revenue of $869 million, largely from patent licensing.
InterDigital's core business model is centered on intellectual property monetization rather than manufacturing physical products. The company primarily invents and develops foundational wireless (2G, 3G, 4G, 5G, 6G, Wi-Fi), video processing, artificial intelligence (AI), and Internet of Things (IoT) technologies. It contributes to global standards bodies like 3GPP, IEEE, and MPEG, and licenses its extensive portfolio of approximately 28,000 global patents and patent applications to companies worldwide. InterDigital Patent Holdings Inc. specifically holds declared essential LTE patents.
The company primarily operates as a patent licensor and enforcer. While the provided case data shows InterDigital Patent Holdings Inc. as a defendant in one case at the Patent Trial and Appeal Board (PTAB), this typically indicates a challenge to the validity of a patent it owns or asserts [cite: authoritative case data]. More broadly, its parent company, InterDigital, Inc., is an active patent litigant, frequently asserting its portfolio to secure licensing agreements and injunctions.
The sole tracked case for InterDigital Patent Holdings Inc. is MICROSOFT CORPORATION et al. v. InterDigital Patent Holdings Inc., filed in 2024 at the Patent Trial and Appeal Board (PTAB) [cite: authoritative case data]. This case is an inter partes review (IPR), where Microsoft is likely challenging the validity of one of InterDigital's patents. In related context, InterDigital, Inc. has recently secured injunctions against The Walt Disney Company in Europe concerning video encoding techniques and engaged in arbitration with Samsung, resulting in a $1.05 billion patent license agreement.
An Inter Partes Review (IPR) filed by Microsoft, Lenovo entities, and Motorola Mobility against InterDigital Patent Holdings Inc., which has resulted in a Final Written Decision.