Pegasus Wireless Innovation LLC

Pegasus Wireless Innovation LLC is a privately held patent assertion entity (NPE), formed in Virginia in August 2022, with Yeasun "Eric" Yoon serving as its CEO. The company does not develop or sell products or services, instead focusing on the monetization of intellectual property. No public information regarding its employee count or revenue is available.

The company's operations revolve around asserting a portfolio of patents primarily focused on 4G/LTE and 5G wireless communication technologies. These patents, which cover core infrastructure functions like resource scheduling, channel estimation, and network signaling, were originally developed by KT Corporation, a South Korean telecommunications company. Many of these patents have been declared essential to 3GPP wireless communication standards. Pegasus Wireless Innovation LLC obtained an exclusive license and substantial rights to these patents from KT Corporation.

Pegasus Wireless Innovation LLC's patent-litigation posture is that of an NPE. It has engaged in numerous patent infringement lawsuits as a plaintiff, with its cases predominantly filed in the Eastern District of Texas. The company is also a defendant in at least one case before the Patent Trial and Appeal Board (PTAB) where Unified Patents initiated an Inter Partes Review (IPR) to challenge the validity of a patent asserted by Pegasus Wireless Innovation LLC.

Notable cases include its infringement campaigns against major U.S. wireless carriers. For instance, Pegasus Wireless Innovation LLC sued T-Mobile and Sprint, asserting 11 patents related to 5G wireless communication, a case that concluded with a dismissal with prejudice in December 2025. Parallel lawsuits against AT&T involving 4G/LTE and 5G patents also saw dismissals, some with prejudice and others without prejudice, suggesting confidential licensing or settlement agreements. The defendant PTAB case highlights challenges to the validity of its asserted patents, with other petitioners like Ericsson and Google also being involved in related IPRs against KT Corporation and Pegasus Wireless Innovation LLC.