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5G SEP Implementation: Identifying the Patents That Matter in Licensing

5G SEP Implementation:
Identifying the Patents That Matter in Licensing

A GreyB analysis of the 5G SEP landscape, separating declaration count from technical value. The report maps declared patents against real implementation across smartphones, automobiles, IoT, and satellite systems.
Download the Report

100,000+

Declared 5G patent families now sit in the ETSI IPR database

44.65%

Average share of declared families actually implemented in products

28.7%

Of declared families are classified as foundational to the standard

88%

Share of all declared families held by the top 20 portfolio holders

Key Takeaways

GreyB mapped a stratified sample of declared 5G patent families against a 423-feature 3GPP taxonomy spanning Release 15 through Release 19, then checked which features actually appear in products.
The implementation gap is structural
On average, only 44.65% of declared 5G patent families are implemented in any given product category. The rest carry no technical footprint in that product today.
Smartphones show the widest gap
91.5% of declared families are relevant to smartphone use cases, but only 39.8% are implemented, a gap of more than 50 percentage points.
Baseline features are already deployed
Technical building blocks reused across every domain show high implementation: 80% in automotive, 78.1% in IoT, and 70% in NTN.
Baseline features are already deployed
Technical building blocks reused across every domain show high implementation: 80% in automotive, 78.1% in IoT, and 70% in NTN.
Declared portfolios are concentrated
The top 20 declared holders account for approximately 88% of all declared 5G families. The top 5 alone, Huawei, Qualcomm, LG Electronics, Samsung, and Ericsson, hold about 43%.
Not all SEPs carry equal leverage
28.7% of declared families cover foundational features present across every domain. The remaining 71.3% cover enhancements, optional features, or single-domain extensions.

What's Inside the Report

The report builds a defensible royalty framework from the ground up, moving past declaration counts into feature-level implementation and essentiality.
  • Scale of current 5G SEP declarations and 3GPP activity, with year-by-year filing trends and geographic distribution of declared families
  • An explanation of why declaration-based royalty calculations overstate genuine SEP exposure
  • A breakdown of foundational patents, the SEP tier with the broadest licensing reach across products
  • Rankings of the top 20 declared 5G portfolio holders, their headquarters, and pool memberships
  • Feature-level implementation analysis across smartphone, automobile, IoT, and satellite communication industries
  • A five-step framework for calculating a defensible 5G royalty base

The Gap Between Declared and Implemented

Across the four product categories GreyB analyzed, declared relevance and actual implementation diverge sharply. Smartphone-related applications carry the deepest declared coverage of any domain, 91.5% of families are relevant, yet only 39.8% are implemented. Automobile, satellite communication, and IoT show narrower but still consistent gaps, with implementation rates between 42.5% and 50.6% against declared relevance of 60.6% to 69.5%.

The report separates declared families into baseline features, the building blocks reused across every domain, and core features, built for a single domain with limited use elsewhere. That split explains why implementation rates vary so widely even within the same product category.

declared and implemented
chart functional

Not Every SEP Carries the Same Leverage

GreyB built a 423-feature 5G NR taxonomy spanning Release 15 through Release 19, then identified which features are foundational, meaning they are used across smartphones, automobiles, IoT, and satellite systems rather than a single niche use case.

Of the declared families mapped against this taxonomy, 28.7% cover foundational features. A patent covering one of these features carries structurally greater licensing leverage than one covering a single-release, single-domain extension, even when both are equally genuine SEPs. The majority of foundational patents trace back to Release 15, in areas such as UL power control, the measurement framework, and cell selection and reselection.

The report separates declared families into baseline features, the building blocks reused across every domain, and core features, built for a single domain with limited use elsewhere. That split explains why implementation rates vary so widely even within the same product category.

A Faster Pace of Declaration Than Any Prior Generation

The ETSI IPR database now holds more than 100,000 declared 5G patent families, a volume that exceeds the combined declared portfolios of 2G, 3G, and 4G at comparable points in their lifecycles. ETSI’s declaration regime requires no independent review at the time of filing, so any patent owner may declare any patent as potentially essential.

Declaration activity has continued to climb through 2025, with pending filings consistently outpacing active granted families each year. The United States leads in active granted families. China ranks second in active enforcement footprint, and European filings remain the backbone of German court proceedings.

chart declaration yearwise

A Faster Pace of Declaration Than Any Prior Generation

Rankings reflect declared family counts, active and granted, as reported in the ETSI IPR database as of January 2026.

Rank

SEP Holder

Headquarters

Pool Membership

1

Huawei

China

Sisvel POS pool, Avanci 5G Vehicle, Direct licensing

2

Qualcomm

USA

Avanci 5G Vehicle, Direct licensing

3

LG Electronics

South Korea

Avanci 5G Vehicle

4

Samsung

South Korea

Avanci 5G Vehicle

5

Ericsson

Sweden

Avanci 5G Vehicle

6

ZTE

China

Avanci 5G Vehicle

The top 5 holders, Huawei, Qualcomm, LG Electronics, Samsung, and Ericsson, collectively account for approximately 43% of declared 5G families with at least one member alive and granted. Resolving a licensing position with these five entities addresses most declared-portfolio exposure, though not necessarily most genuine SEP exposure, which requires independent essentiality verification across the full landscape.

A Framework for Defensible 5G Royalty Determination

The report proposes a two-pillar model that replaces declaration-based royalty calculations with a methodology grounded in what is implemented and what is genuinely essential.

Feature-level analysis alone reduces the royalty base but leaves open the risk of paying for declared patents that are not genuinely essential. Essentiality verification alone identifies genuine SEPs but does not account for the fact that not all genuine SEPs are relevant to every product. The report combines both pillars into a royalty base that is technically accurate and product-specific.

For licensing executives and IP counsels managing 5G exposure, the report translates this framework into a five-step process.

Product implementation profiling

Map each product category against 3GPP NR Release 15 through 18 specifications

Portfolio scoping

Narrow declared 5G families to those covering implemented feature clusters

Essentiality screening

Screen the scoped portfolio against a genuine essentiality threshold

Proportional share calculation

Calculate the licensor's share of the verified 5G SEP landscape for the product

Negotiation engagement

Present the implementation profile and essentiality results as the basis for a counter-proposal

Download 5G Standard Essential Patents: Beyond Declarations

The full report includes the complete 423-feature 5G NR taxonomy, release-wise portfolio breakdowns for the top 15 declared holders, domain-specific implementation profiles, and the full five-step royalty determination framework.

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