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Run your analysis now →https://www.patsnap.com/resources/blog/rd-blog/cellular-v2x-sidelink-communication-patent-landscape/ · Patsnap · data cut-off 2026-07-31 · downloaded from the live page
Patent Landscape BriefCellular 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.
- Filing peaked in 2021 at 3,650. By 2024, the last complete year, filings had fallen to 1,281 — a 65% drop across that span, though 2025-2026 figures are still filling in due to publication lag.
- 83.0% of records sit in H04W alone. Wireless network claims dominate; positioning (G01S) and traffic-control (G08G) classes each cover under 2% of the 21,872 records, marking where the field is thin.
21.9K
Published Records
47%
Top-5 Share of All Records
-65%
Filing Growth 2021→2024
US
Leading Jurisdiction
Filing growth compares 2021 (3,650 records) with 2024 (1,281) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 21,872 records in scope (CR5), not by the ranked leaders only.
Published byPatsnap Research··7 min readSourced from Patsnap Eureka
Field Overview
What the Cellular V2X sidelink corpus actually covers
Cellular V2X sidelink communication lets vehicles exchange messages directly, without routing through a base station, using autonomous resource selection over a shared resource pool. The patent activity captured here spans 21,872 published records filed or published between 2015 and mid-2026, built around search terms core to the mechanism: sensing windows, congestion control, hidden-node handling, half-duplex constraints and blind retransmission. These are not peripheral V2X features; they are the control logic that decides whether two vehicles can actually share a channel without collision.
Because a single filing can cover a chipset, a base-station interaction, and a resource-selection algorithm at once, the technology composition below counts by IPC subclass rather than by document, and the shares add to more than 100%. Family-level counting, used throughout the assignee ranking, is the fairer lens: it strips out continuation filings and multi-jurisdiction duplicates that inflate raw document totals without adding new invention.
Filing activity and technology composition, 2015-2026
Source: Patsnap Eureka. Assignee ranking and totals. 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.Run this in Eureka MCP
The Numbers
Filing trend and technology composition
Two views of the same 21,872 records: how filing volume has moved year over year, and which IPC subclasses the claims actually sit in.
Filing trend: rapid build-up, then a pullback from a 2021 peak
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.
IPC composition: concentrated in wireless networking
H04W (wireless communication networks) touches 83.0% of the 21,872 records, with H04L (digital information transmission) a distant second at 32.0%. Positioning-related G01S, multiplex-communication H04J, traffic-control G08G and telephonic H04M subclasses each sit at or below 1.4% of records — these are the adjacent branches referenced later as under-claimed.
Shares are the percentage of the 21,872 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Source: Patsnap Eureka. 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.
Go deeper on Cellular V2X Sidelink Communication with Eureka
This page is one run against one query. Ask Eureka your own question about cellular v2x sidelink communication and every answer comes back with the patent numbers behind it.
Try EurekaRepresentative Filing
A representative sidelink resource-selection claim
Representative Record
Method of transmission/reception for sidelink in a wireless communication system and apparatus therefor
LG ELECTRONICS INC.
Discloses a method performed by a user equipment for sidelink transmission: receiving configuration information for a sidelink resource pool from a base station, performing sensing based on a sensing window, selecting a resource for sidelink transmission from the pool based on the sensing result, and applying re-evaluation and/or pre-emption logic to the selected resource.Filed by LG Electronics, published 2025-05-13 as US12302384B2 — illustrates the sensing-window-to-resource-selection chain that recurs across the leading assignees' portfolios.
Most-cited records in the corpus
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US5093912A | Dynamic resource pool expansion and contraction in multiprocessing environments | 1,621 |
| 2 | US5867495A | System, method and article of manufacture for communications utilizing calling, plans in a hybrid network | 1,612 |
| 3 | US20170331670A1 | Network Architecture, Methods, and Devices for a Wireless Communications Network | 1,307 |
| 4 | US5999525A | Method for video telephony over a hybrid network | 1,229 |
| 5 | US6335927B1 | System and method for providing requested quality of service in a hybrid network | 1,203 |
| 6 | US5867494A | System, method and article of manufacture with integrated video conferencing billing in a communication syste… | 1,181 |
| 7 | US20170331577A1 | Network Architecture, Methods, and Devices for a Wireless Communications Network | 1,170 |
| 8 | US6754181B1 | System and method for a directory service supporting a hybrid communication system architecture | 992 |
| 9 | US20100082513A1 | System and Method for Distributed Denial of Service Identification and Prevention | 919 |
| 10 | US6731625B1 | System, method and article of manufacture for a call back architecture in a hybrid network with support for i… | 909 |
Citation counts favour older filings simply because they have had more time to accumulate references; treat this table as a map of influential prior art, not a ranking of current-year importance.
Each row carries its publication number; clicking a row searches Eureka by that number.
Source: Patsnap Eureka. Citation counts and representative records. 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.Run this in Eureka MCP
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What the data supports and what it does not
Three read-throughs from the numbers above, kept to what the evidence actually shows.
Concentration
46.8%
of 21,872 records held by top 5
The top of the field is genuinely crowded
Five assignees hold 10,241 of the 21,872 records in scope, and the top ten extend that to 63.8% (13,959 records). Any new resource-pool or sensing-window claim is filing directly alongside this concentration, not into open ground.
Top 10 combined = 63.8% of all records in scope
Trend
-65%
2021 to 2024 filing change
Filing has pulled back from its 2021 peak
Volume dropped from 3,650 filings in 2021 to 1,281 in 2024, a 65% fall across three complete years. That tracks with standardisation cycles maturing rather than a collapse in interest; publication lag makes 2025-2026 too incomplete to extend the trend line confidently.
2021 = 3,650 filings; 2024 = 1,281 filings
Composition
83.0%
of records touch H04W
Claim density sits almost entirely in wireless networking
H04W and H04L together dominate the classification picture, while G01S, H04J, G06F, G08G and H04M each sit under 1.5% of the 21,872 records. That gap is where positioning-integrated and traffic-control-integrated sidelink claims remain comparatively open.
G01S, G08G and H04M each under 1.4% of records
Eureka AI Agent
Looking for what nobody has claimed yet?
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to cellular v2x sidelink communication, with the prior art for and against each one.
Source: Patsnap Eureka. Co-assignee relationships and derived observations. 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.Run this in Eureka MCP
Competitive Set
Who holds the claim space, and where it thins out
The ranking covers 100 assignees returned by the data endpoint — not a curated top-50 or top-100 list, just the full set the dataset surfaces, measured by family count.
Leader
3,475
records held by the top assignee
A single leader sets the scale for everyone else
The leading assignee's family count is more than three times the count at fifth place (1,040), which itself is nearly double the count at tenth place (571). The drop-off from first to fifth is steep; from fifth to tenth it flattens.
5th place = 1,040 records; 10th place = 571 records
Momentum
-75% to -89%
YoY change among leading filers, latest year
Even the most active filers are pulling back
Every assignee tracked for recent-year momentum shows a double-digit percentage decline year over year in the latest year, from roughly -58% to -89%. Given publication lag, this reads as an incomplete latest year rather than a genuine collapse in filing intent.
Latest-year filings range from 4 to 16 per tracked assignee
Collaboration
10
co-assignee pairs identified
Co-filing is limited and concentrated around one company
Only ten co-assignee pairs appear in the dataset, and the strongest of them all involve the same chipset leader paired with different named inventors — a pattern of internal inventor-assignee pairing rather than broad cross-company joint filing.
Strongest pair recorded 65 joint records
Recent-year filing momentum by assignee
| Assignee | Recent year | YoY |
|---|---|---|
| Qualcomm Inc. | 16 | -75% |
| Guangdong OPPO Mobile Telecommunications Corp., Ltd. | 11 | -81% |
| InterDigital Patent Holdings, Inc. | 10 | -80% |
| Huawei Technologies Co., Ltd. | 8 | -89% |
| Samsung Electronics Co., Ltd. (Korea) | 5 | -58% |
| Panasonic Intellectual Property Corporation of America | 4 | -67% |
| LG Electronics Inc. | 2 | -88% |
| Telefonaktiebolaget LM Ericsson (publ) | 2 | -50% |
Source: Patsnap Eureka. Assignee-level momentum. 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.Run this in Eureka MCP
Next Steps
Where to take this analysis
The dataset points to specific next questions rather than a single conclusion — each depends on what decision you are trying to make.
Run a freedom-to-operate check on the thin classes
G01S, G08G, H04J and H04M each cover under 1.5% of the 21,872 records. Before drafting into any of them, confirm whether that low share reflects genuinely open claim space or simply that the search terms used here under-capture that branch.
Explore white space in Eureka →Track the leading assignees' most recent filings directly
Aggregate concentration figures hide which specific claims the top five are extending right now. A citation-forward search on their most recent published families will show whether they are reinforcing the resource-pool core or branching outward.
Monitor assignee activity in Eureka →Source: Patsnap Eureka. Forward-looking reading of the same dataset. 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.Run this in Eureka MCP
Frequently Asked
Questions practitioners ask about this landscape
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.
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.
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.
US12302384B2, assigned to LG Electronics and published 2025-05-13, claims a method for sidelink transmission where a user equipment receives resource pool configuration from a base station, senses within a defined sensing window, selects a transmission resource based on that sensing, and applies re-evaluation or pre-emption logic to the selected resource. It is a representative example of the sensing-window-to-resource-selection chain that recurs across many of the leading assignees' filings in this corpus. Anyone implementing autonomous resource selection for sidelink should read its full claim set closely rather than relying on the abstract, since the specific triggers for re-evaluation and pre-emption are where the enforceable boundary usually sits.
The lowest-share IPC subclasses in this dataset — G01S (positioning), G08G (traffic control), H04J (multiplexing), G06F (data processing) and H04M (telephonic communication) — each cover under 1.5% of the 21,872 records, compared with 83.0% for core wireless networking claims (H04W). That gap suggests sidelink claims that integrate directly with positioning accuracy, traffic-signal coordination or compute-offload for sensing-window processing are comparatively under-claimed. It is worth confirming with a targeted search whether that reflects real white space or just a gap in how this dataset's search terms capture that adjacent branch.
Answers are grounded in the same dataset. 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.Run this in Eureka MCP
Research Cellular V2X Sidelink Communication in depth with Eureka
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Disclaimer. This page is generated from Patsnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company's registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.