Interior Ambient Lighting Patents: Who Leads, Where the Gaps Are 2026
Interior ambient lighting and display integration patents: mapping the filers, the claim clusters and the open ground
40.4% sits with five filers. The top 5 assignees combined account for 42 of the 104 records in scope — concentrated, but with a long tail of single- and double-filing entrants beneath them. Annual filings ran from 5 in 2017 to a peak of 12 in 2018, then eased through the following years to 1 in 2026. The 2026 figure is a partial year and, like the two or three years before it, is understated by publication lag of roughly 18 months between filing and appearance in the record.
- 1FULHAM CO LTD10
- 2LEDVANCE LLC10
- 3KOITO MFG CO LTD10
- 4PHILIPS LIGHTING NORTH AMERICA CORPORATION7
- 5INTEGRATED POWER COMPONENTS5
See the full interior ambient lighting and display integration 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
Common questions about this landscape
Who are the leading patent holders in interior ambient lighting and display integration?
The assignee ranking for this dataset covers 45 companies, with the leader holding 10 of the 104 records in scope. The top 5 assignees combined account for 42 records, or 40.4% of the field, while the top 10 combined reach 64 records, or 61.5%. Below the top tier, most of the remaining companies in the ranking hold only one or two records each, forming a long tail rather than a second cluster of comparable size.
What technology areas dominate the patent claims in this space?
Electric heating and lighting circuits, classified under IPC subclass H05B, appear in 68.3% of the 104 records in scope, making circuit-level control by far the most heavily claimed angle. Physical light-guide and lens hardware under F21V and F21S follow at 27.9% and 19.2% respectively. Vehicle-specific lighting and signalling under B60Q, semiconductor device claims under H01L, and digital transmission claims under H04L each sit at a smaller 9.6%, indicating those are present but not the primary battleground.
Is patent filing activity in this field growing or slowing down?
Filing activity rose from 5 records in 2017 to a peak of 12 in 2018, then declined through the following years to 1 in 2026. A precise growth rate cannot be computed because fewer than four complete recent years remain once publication lag is accounted for. Readers should treat the last two to three years of the trend as understated, since publication typically lags filing by roughly 18 months.
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 Interior Ambient Lighting and Display Integration 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.