Description
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 with respect to all versions of HEVC, respectively, as improvements have been gradually implemented to address evolving technological demands in HEVC.
Patented claim is compared to the standard, and if every element of the claim aligns with the H.265 specifications, the patent is considered essential. On the other hand, if any element is not present or there is a contradiction between the claim and the standard (e.g., conflicting requirements or descriptions), the patent is considered non-essential. This manual evaluation process ensures that only patents fully aligned with the H.265 standard’s requirements are classified as essential.
Frequently asked questions
What does this report cover about NTT’s HEVC patents?
It covers an essentiality analysis of NTT’s patent portfolio against the HEVC/H.265 standard. The study identified 82 active granted patents held by NTT that relate to HEVC technology. The analysis spans the main technical areas of the standard, including block based coding, predictive coding, transformation and quantization, multi-layer coding, and filtering. Each patent was reviewed by mapping the elements of its independent claims to the relevant sections of the standard, so every conclusion is tied to a specific part of the specification.
How were the 82 NTT patents selected for review?
Selection started with searches across multiple patent databases. Those searches combined search strings, IPC and CPC classifications, and keywords specific to HEVC. Records were then screened for relevance to the standard, and the analysis kept the active granted patents that relate to HEVC technology. Each remaining patent was read in full and its independent claim elements were compared with the text of the standard. The result is a manually verified set rather than a list produced by an automated score.
What do essential and non-essential mean in this analysis?
A patent is treated as essential when every element of the compared claim aligns with the H.265 specification. If any element is absent from the standard, or the claim contradicts it through conflicting requirements or descriptions, the patent is treated as non-essential. Essentiality is checked against all versions of HEVC, because the standard has been improved in stages to meet changing technical demands. Each conclusion rests on a claim to specification comparison that a reader can follow and question.
How can I get this report and can the scope be changed?
The report is supplied on request through the contact page on the website. There is no online cart and no instant download, so a request starts a short conversation about what you need. Scope can be adjusted, for example by focusing on a subset of the HEVC technical areas, by extending the review to further patents in the same families, or by adding a claim chart format that suits your internal review process.
