Greenthread Ltd

Based on public records, Greenthread, LLC is a Texas-based limited liability company headquartered in Dallas. It operates as a non-practicing entity (NPE), also known as a patent assertion entity (PAE). Records indicate it is managed by its founder, G.R. Mohan Rao, who is also the named inventor on the patents the company asserts, and is backed by litigation funding. As an NPE, Greenthread does not manufacture products or provide services; its business is focused on licensing and litigating its patent portfolio.

Greenthread's operations consist of asserting a portfolio of patents related to semiconductor fabrication and device architecture. The patents generally cover semiconductor devices that use "graded dopant regions," a technology intended to improve transistor and device performance. The patents originated with the company's founder, G.R. Mohan Rao. Greenthread has filed patent infringement lawsuits against numerous technology companies that produce or use semiconductors, including Intel, Dell, Samsung, and Monolithic Power Systems.

The company's patent litigation posture is exclusively that of a plaintiff, which is consistent with its classification as an NPE. The provided data shows three plaintiff cases and zero as a defendant. Greenthread has filed suits in various federal jurisdictions, including the Eastern and Western Districts of Texas and the District of Delaware.

The company's most prominent recent litigation involves Monolithic Power Systems Inc. (MPS). The tracked cases are appeals stemming from an infringement suit Greenthread filed in the District of Delaware. That district court case was stayed pending multiple inter partes review (IPR) challenges filed by MPS at the U.S. Patent Trial and Appeal Board (PTAB). In May 2026, the PTAB issued final written decisions finding all challenged claims across six of Greenthread's patents to be unpatentable, a significant setback for the assertion campaign against MPS.