MANUAL ASSESSMENT OF NTT's PATENT PORTFOLIO IN RELATION TO HEVC STANDARD
This report provides a detailed analysis of the patent landscape for HEVC.
NTT is among the notable contributors to the development of HEVC, with a total of 82 unique and active patent families identified.
This analysis focuses on understanding the scope, relevance, and potential essentiality of NTT’s patent portfolio in relation to key HEVC technologies such as Predictive Coding, Block-based Coding, Bistream, Filtering, and 3D video.
What you’ll get:
- +1. Introduction
- 1.1 HEVC
- 1.2 Overview of Key HEVC Technologies
- +2. HEVC Patent Analysis
- 2.1 Methodology for finding NTT’s HEVC related patents
- 2.2 Methodology for Essentiality Evaluation
- +3. Analysis of NTT’s Contribution to HEVC
- +3.1 Video Encoding
- 3.1.1 Essential Patents Related to Video Encoding
- 3.1.2 Non-Essential Patents Related to Video Encoding
- +3.2 Video Decoding
- 3.2.1 Essential Patents Related to Video Decoding
- 3.2.2 Non-Essential Patents Related to Video Decoding
- +3.3 Video Coding
- 3.3.1 Essential Patents Related to Video Coding
- 3.3.2 Non-Essential Patents Related to Video Coding
- +3.4 Prediction
- 3.4.1 Essential Patents Related to Prediction
- 3.4.2 Non-Essential Patents Related to Prediction
- +3.5 Filtering
- 3.5.1 Essential Patents Related to Filtering
- +3.6 Block-based Coding
- 3.6.1 Non-Essential Patents Related to Block-based Coding
- +3.7 Bitstream
- 3.7.1 Non-Essential Patents Related to Bitstream
- +3.1 Video Encoding
- +4. Conclusion
To identify relevant patents, comprehensive searches were conducted across multiple patent databases using a combination of search strings, IPC/CPC classifications, and HEVC–specific keywords.
To determine the essentiality of a patent, each claim is compared to the H.265 standard to identify whether the patented claim’s elements are present in the standard. Essentiality is checked w.r.t all versions of HEVC respectively as improvements have been gradually implemented to address evolving technological demands in HEVC.
Below is an example of the analysis of one of NTT's patents:

