Cellular V2X Sidelink Communication Patents: Mapping the Leaders and the Open Claim Space
46.8% concentration at the top. The five leading assignees hold 10,241 of 21,872 records in scope — sidelink resource pool and sensing-window claims are dense territory before you even start drafting. Filings rose from 1,203 in 2017 to a peak of 3,650 in 2021, then fell to 1,281 by 2024 — a 65% decline across that three-year span. 2025 and 2026 figures are still incomplete because publication typically lags filing by around 18 months, so the apparent drop-off in the most recent two years should not be read as the field cooling; the 2021-2024 comparison is the reliable signal.
- 1LG ELECTRONICS INC3,475
- 2QUALCOMM INC2,780
- 3SAMSUNG ELECTRONICS CO LTD1,559
- 4HUAWEI TECH CO LTD1,387
- 5GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD1,040
See the full cellular v2x sidelink communication analysis in Eureka
- The complete ranking, not just the top five
- Every IPC branch with its share of the corpus
- The most-cited records, and where claim space is still thin
Questions practitioners ask about this landscape
Who holds the most Cellular V2X sidelink patents?
The dataset ranks 100 assignees by family count, and a single company leads with 3,475 records, well ahead of fifth place at 1,040. The top five assignees combined hold 10,241 of the 21,872 records in scope, or 46.8% of the field, so the leading tier is genuinely concentrated rather than evenly spread. Anyone assessing freedom to operate should treat that top tier as occupied ground and focus diligence on the specific claim language rather than assuming broad openness just because 95 other assignees also appear in the ranking.
Is Cellular V2X sidelink patent filing still growing?
Filing peaked in 2021 at 3,650 records and had fallen to 1,281 by 2024, a 65% decline across that three-year span using the last complete years available. That is a genuine pullback in volume, likely tied to standardisation cycles settling rather than a technology in decline. Figures for 2025 and 2026 look lower still, but publication typically lags filing by about 18 months, so those two years are undercounted and should not be read as continuing the downward trend.
What does the IPC composition tell you about where sidelink patents actually sit?
83.0% of the 21,872 records carry an H04W classification (wireless communication networks), and 32.0% also carry H04L (digital information transmission) — the two together account for the bulk of claim activity. Classes tied to positioning (G01S), traffic control (G08G) and telephonic communication (H04M) each sit at or below 1.4% of records. Because a single record can carry multiple IPC codes, these shares add to more than 100%, and the low-share classes are the more promising areas to check for open claim space rather than crowded ones.
Disclaimer. This analysis is based on Patsnap Eureka data drawn from a limited snapshot of global patent records and is provided for general information and reference only. Patent data carries inherent limitations — recent filings are under-counted because of publication lag, counts may be on a record or family basis, classification and applicant-name data may contain errors or duplicates, and the underlying search query defines the scope shown — so the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing here is an exhaustive prior-art, novelty, freedom-to-operate or validity search, nor does it constitute legal, financial or professional advice, and it should not be relied upon as such. Verify independently and review with qualified patent and legal professionals before acting on it.
Method: Filing trend and technology composition. Derived from a Patsnap search on Cellular V2X Sidelink Communication covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish. Every share divides by all records in scope. Data: Patsnap Eureka. See the full landscape report.