- February 27, 2025
- Posted by: Bikramjit Singh
- Categories:
Litigation Analysis of ETSI-Declared Patents
‘ This report aims to understand the litigation landscape of ETSI-declared patents litigated in the US. It analyzes the yearly trend of litigation cases, and the number of declared patents involved. The types of plaintiffs were analyzed to understand the share of practicing entities (PEs) and non-practicing entities (NPEs) in litigation cases. It also seeks to understand the history of litigated patents, top 10 NPEs and PEs, including which declarants or assignees reassign their declared patents to PEs and NPEs. Finally, it aims to understand how many IPR cases were filed against the litigated patents and the outcome of the IPR case history.’
Following a comprehensive analysis, 500 patents declared in the ETSI-declaration database were found to have been litigated. Additionally, 76 patents were not explicitly declared in the ETSI declaration database; however, their family members were found to have been declared. Therefore, 576 declared patent families involved in 264 litigation cases were included in the analysis.
A study investigated the categories of plaintiffs in 264 litigation cases. The analysis revealed that 55 distinct NPEs initiated 121 litigation cases tied to 231 declared patent families, whereas 62 unique PEs filed 143 litigation cases linked to 345 declared patent families.
The reassignment history was analyzed for all 576 declared patent families, of which 286 patents were found to have no reassignment history. Of the remaining 290 patents, the original assignee or company that declared the patent to ETSI reassigned it to NPEs for 222 patents.
