Photonic Integration Patents: Who Leads, Where the Gaps Are 2026
- Filing has cooled since 2021. the peak year in the dataset, with the trend flat-to-declining through the 2022 midpoint and toward zero in the most recent, still-partial year.
- Citations are dominated by early transmitter/receiver PIC architecture. the two most-cited records both date to the original TxPIC/RxPIC chip family, showing how much of the field still traces back to foundational wavelength-stabilised transmitter and receiver designs.
- Momentum has stalled across the named leaders. every assignee tracked for recent-year momentum shows zero filings in the latest year, which is a filing-lag artefact as much as a demand signal.
Filing growth compares 2021 (39 records) with 2024 (29) — 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 476 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This dataset tracks 476 patent families published between 2015 and mid-2026 that combine photonic integrated circuit or silicon photonics terminology with monolithic, heterogeneous or InP integration language, filtered to the core optical-element, semiconductor-laser and photodetector IPC classes. It captures the claims that define how light-generating, light-routing and light-detecting elements are combined onto a single chip or platform, rather than every patent that merely mentions an optical component.
Filing activity rose through the late 2010s, peaked in 2021, and has since flattened or declined through the most recent full years of data. Because publication lags filing by roughly 18 months, the last one to two years in any such trend will always look thinner than they will eventually turn out to be — read the tail as incomplete, not as a real drop-off.
Filing trend and technology composition
Two views of the same 476-family corpus: how filing volume has moved year over year, and which IPC subclasses carry the claim weight.
Filing trend: rise, 2021 peak, then flattening
Annual filings climbed from 11 in 2017 to a peak of 39 in 2021, then held near that level at 36 in 2022 before tapering toward the present, incomplete year. That shape is consistent with a technology that reached an early wave of platform-defining filings and has not yet produced a second wave.
IPC composition: optics and lasers dominate
G02B (optical elements & systems) and H01S (lasers & stimulated emission) are the two largest subclasses by a wide margin, followed by transmission and multiplexing classes (H04B, H04J) and optical modulation (G02F). H01L (semiconductor devices proper) and B82Y (nanotechnology) sit at the edges of the corpus, suggesting most claims are written from the optics/laser side of the integration problem rather than the bulk-semiconductor side.
Shares are the percentage of the 476 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Photonic Integrated Circuit Photonic Integration with Eureka
This page is one run against one query. Ask Eureka your own question about photonic integrated circuit photonic integration and every answer comes back with the patent numbers behind it.
Try EurekaThe records the field cites most
US20220397388A1 — Temperature insensitive distributed strain monitoring apparatus and method
An apparatus for monitoring strain in an optical chip in a silicon photonics platform. The apparatus includes a silicon photonics substrate shared with the optical chip, an optical input configured in the substrate to supply a single-wavelength input signal, and a first and second waveguide arm embedded in the substrate to form an on-chip interferometer. The second arm forms a delay line positioned in or adjacent to the optical chip; the interferometer generates an interference pattern that indicates strain distribution.Filed by Marvell Asia Pte, Ltd.; published 2022-12-15.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20030095736A1 | Transmitter photonic integrated circuit (TxPIC) chip architectures and drive systems and wavelength stabiliza… | 281 |
| 2 | US20040033004A1 | Optical signal receiver photonic integrated circuit (RxPIC), an associated optical signal transmitter photoni… | 274 |
| 3 | US20030099018A1 | Digital optical network architecture | 189 |
| 4 | US6330378B1 | Photonic integrated detector having a plurality of asymmetric waveguides | 186 |
| 5 | US9354039B2 | Methods, systems, and apparatus for programmable quantum photonic processing | 110 |
| 6 | US20030081878A1 | Transmitter photonic integrated circuit (TxPIC) chip with enhanced power and yield without on-chip amplificat… | 109 |
| 7 | US20040105476A1 | Planar waveguide surface emitting laser and photonic integrated circuit | 99 |
| 8 | US9791258B2 | Methods, systems, and apparatus for programmable quantum photonic processing | 87 |
| 9 | US10754091B1 | Integrated coherent optical transceiver, light engine | 85 |
| 10 | US7079715B2 | Transmitter photonic integrated circuit (TxPIC) chip architectures and drive systems and wavelength stabiliza… | 85 |
Citation counts are drawn from a searched corpus and skew toward older filings that have simply had more time to accumulate citations; treat them as a measure of influence on subsequent drafting, not of present-day commercial importance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Browse MCP servers →What the data implies for filing decisions
Four read-throughs from the trend, the IPC split and the citation table, aimed at where to file next rather than at describing the dataset.
Growth has plateaued, not accelerated
The corpus peaked in 2021 and the following year held roughly flat rather than climbing further. Combined with the drop toward the most recent, still-partial year, this reads as a technology past its first filing wave rather than one still building toward a peak.
Optics and laser classes carry the claim load
Optical-element and laser subclasses dominate the IPC mix by a wide margin over transmission, multiplexing and modulation classes. New filings that sit squarely in G02B or H01S face the densest prior art; claims framed around transmission or multiplexing integration (H04B, H04J) sit on comparatively lighter ground.
The earliest transmitter/receiver PIC chips still anchor the field
The two most-cited records in the corpus both describe transmitter and receiver PIC chip architectures with wavelength stabilisation. Their citation counts are inflated by age as much as by relevance, but the concentration shows how much later drafting still references that original architecture.
Momentum looks flat everywhere at once
Every assignee tracked for recent-year momentum, including the most active filers, shows zero filings in the latest year. Given the roughly 18-month publication lag, this is best read as an incomplete final year rather than a genuine simultaneous stop across the field.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to photonic integrated circuit photonic integration, with the prior art for and against each one.
Who holds the claims, and where the gaps sit
Filing here concentrates among a small set of research-linked and telecom-optics assignees, with a long tail of single- or few-filing entrants. The strongest co-filing relationship in the dataset links a university and a microelectronics research centre, pointing to an academic-industrial route into this space rather than a purely corporate one.
University-institute pairing leads collaborative filing
The strongest co-assignee relationship in the corpus links a university and a microelectronics research centre, with a much smaller second link extending to a sensing-technology company. This suggests a pipeline running from academic photonics research through an applied research institute toward eventual commercial licensing.
A concentrated core plus a long tail
A small number of assignees, including laser and transceiver specialists and one large semiconductor company, account for a disproportionate share of filings, while most other names in the corpus appear only a handful of times. That pattern favours freedom-to-operate searches focused on the concentrated core before wider tail searching.
US filing dominates, Europe and PCT are secondary routes
Filings cluster heavily in the United States, with Europe and the WIPO PCT route each carrying a meaningfully smaller but still significant share. Canada and Australia trail well behind, indicating this is primarily a US-first filing strategy with selective international extension.
| Assignee | Recent year | YoY |
|---|---|---|
| Infinera Corporation | 0 | — |
| Ghent University | 0 | — |
| Interuniversity Microelectronics Centre (IMEC) | 0 | — |
| NUS Enterprise Pte Ltd | 0 | — |
| Yingfei Inc. | 0 | — |
| Effect Photonics B.V. | 0 | -100% |
| Sarnoff Corporation | 0 | — |
| Cisco Technology, Inc. | 0 | — |
Where to take this analysis
The dataset points to a plateaued but still commercially active field, concentrated among a small core of assignees with real white space at the integration edges.
Map claims against the under-claimed branches
Strain-sensing substrates, InP-on-silicon laser arrays and nanophotonic integration routes carry thinner claim density than the core optics and laser classes, which is where a first-filed claim has the most room to stand.
Explore white space in EurekaRun freedom-to-operate against the concentrated core
Before searching the long tail, clear the small set of assignees that account for most of the corpus, starting with the transmitter/receiver PIC architecture that still anchors the field's citation graph.
Run an FTO search in EurekaCommon questions about photonic integration patents
This landscape defines the category by claims that combine photonic integrated circuit or silicon photonics terminology with an integration method such as monolithic integration, heterogeneous integration or InP integration, restricted to the IPC classes covering optical elements, semiconductor lasers and multi-element photodetector arrays. It excludes patents that merely mention an optical component in passing without claiming an integration approach. That filter is why the corpus sits at 476 families rather than the much larger set of all photonics-adjacent filings.
The dataset shows filings rising steadily from 2017 through a peak of 39 in 2021, then holding roughly flat at 36 in 2022 before tapering in the most recent years shown. Part of that later tapering is a real slowdown and part is a publication-lag artefact, since patent applications typically publish about 18 months after filing, so the last one to two years in any trend understate true activity. The plateau itself, though, spans enough years to suggest the field has moved past its first wave of platform-defining filings.
Filing concentrates among a small set of laser and transceiver specialists, one large semiconductor company, and research-linked institutions, with a long tail of assignees who appear only a handful of times. The strongest collaborative filing relationship in the corpus links a university and a microelectronics research institute, pointing to an academic-to-applied-research pipeline as one route into the field. For a precise current ranking, the assignee table on this page reflects the full 476-family corpus rather than a curated top list.
The IPC composition shows optical-element and laser subclasses carrying most of the claim density, while nanotechnology-adjacent integration (B82Y) and semiconductor-device-side claims (H01L) are comparatively thin. Sub-areas such as strain-sensing PIC substrates, InP-on-silicon laser array integration and on-chip interferometric delay-line sensors show up in the corpus but without the dense prior art seen in the core optics and laser classes. That combination makes them reasonable starting points for a first claim, though any specific filing decision should be checked against a live freedom-to-operate search.
US20220397388A1 is a Marvell Asia Pte, Ltd. filing, published 2022-12-15, covering a temperature-insensitive apparatus for monitoring strain in an optical chip on a shared silicon photonics substrate, using an on-chip interferometer formed from two waveguide arms where one arm acts as a delay line. It is included here as a representative recent filing rather than one of the most-cited records in the corpus. Anyone building strain-monitoring or delay-line-based sensing features on a silicon photonics substrate should review its claims directly rather than relying on the abstract summary given here.
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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.