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Run your analysis now →https://www.patsnap.com/resources/blog/rd-blog/data-center-fiber-plant-and-connectors-patent-landscape/ · Patsnap · data cut-off 2026-07-31 · downloaded from the live page
Patent Landscape · Optical InterconnectData center fiber plant and connector patents: who holds the ferrule and polarity claims
- 37.4% concentration. The top 5 assignees account for 2,235 of the 5,968 records in scope — filing here is dominated by a small group, not fragmented.
- Filing has cooled from its 2019 peak. Annual filings ran from 375 in 2019 down to 130 in 2024, a -48% move over 2021-2024, though 2025-2026 counts are still filling in as publications lag filing.
- G02B carries the field almost alone. 92.7% of the 5,968 records sit in G02B (optical elements and systems), leaving connector-specific classes like H01R at just 2.9%.
5,968
Published Records
37%
Top-5 Share of All Records
-48%
Filing Growth 2021→2024
US
Leading Jurisdiction
Filing growth compares 2021 (252 records) with 2024 (130) — 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 5,968 records in scope (CR5), not by the ranked leaders only.
Published byPatsnap Research··7 min readSourced from Patsnap Eureka
Overview
What this landscape covers
This landscape tracks 5,968 published records matching optical fiber connector, multi-fiber connector and ferrule assembly filings that also address insertion loss, return loss, polarity management, alignment sleeves, dust caps or high-density panels — the practical concerns of building and maintaining a data center fiber plant rather than the physics of fiber itself. Records span 2015 through the 2026-07-31 cut-off, though the most recent filing years are understated because publication typically lags filing by around 18 months.
The dataset is weighted toward connector hardware and its handling rather than transmission or active optics, which shows up clearly once the IPC composition is broken out. Concentration at the top of the assignee ranking is real but not absolute: half the records in scope sit outside the ten leading filers.
Filing activity and technology composition, 2017-2026
Source: Patsnap Eureka. Assignee ranking and totals. Derived from a Patsnap search on Data Center Fiber Plant and Connectors 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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The Numbers
Filing trends and technology composition
Two views of the same 5,968-record set: how filing activity has moved year over year, and which technology classes the records actually sit in.
Filing trend, 2017-2026
Annual filings rose to a peak of 375 in 2019, then eased; the 2021-2024 span shows a -48% move from 252 to 130 filings. Treat 2025 and 2026 as incomplete rather than as evidence of continued decline.
IPC subclass composition
G02B (optical elements and systems) covers 92.7% of the 5,968 records, with H04B, H01R, G01M and B24B each in the low single digits. Because records can carry multiple IPC codes, these shares sum to well over 100% and should be read individually, not summed.
Shares are the percentage of the 5,968 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 Data Center Fiber Plant and Connectors covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.
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Most-cited records and a recent filing
Representative Recent Filing
Optical fiber connector dust cap with improved connector interface
COMMSCOPE TECHNOLOGIES LLC
A dust cap for capping an optical fiber connector, and an assembly including an optical fiber connector subassembly and a dust cap. The dust cap includes structural features aimed at ease of use, robustness, and improved ability to inhibit ingress of contaminants that can damage fiber ends within the connector.Filed by CommScope Technologies LLC, published 2025-12-18 — illustrates continued investment in field-serviceable connector accessories even as overall filing volume has eased from its 2019 peak.
Most-cited records in the corpus
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US5212752A | Optical fiber ferrule connector having enhanced provisions for tuning | 587 |
| 2 | US5481634A | Connector for optical fiber | 581 |
| 3 | US5647043A | Unipartite jack receptacle | 458 |
| 4 | US5274729A | Universal optical fiber buildout system | 409 |
| 5 | US7198409B2 | Fiber optic connector holder and method | 391 |
| 6 | US7264402B2 | Multi-fiber optic receptacle and plug assembly | 352 |
| 7 | US6206581B1 | Optical connector having a one-piece housing | 332 |
| 8 | US6439780B1 | Field-installable fiber optic ribbon connector and installation tool | 324 |
| 9 | US20090148101A1 | Hardened Fiber Optic Connection System with Multiple Configurations | 322 |
| 10 | US6041155A | Universal dust cover | 317 |
Citation counts favor older filings that have had more time to accumulate citations within this searched corpus; read them as a signal of influence on subsequent filers, not as a ranking of current commercial 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 Data Center Fiber Plant and Connectors 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 means for a filing or freedom-to-operate decision
Three patterns worth acting on before drafting claims or scoping a competitive review in this space.
Concentration
37.4%
of 5,968 records held by top 5
The leader board is short but not closed
The leading assignee alone accounts for 694 records, and the top 5 combined hold 2,235 of the 5,968 records in scope (37.4%). That leaves nearly two-thirds of the field outside the five biggest filers, including national telecom incumbents and component specialists rather than only hardware majors.
Source: assignee ranking, 100 companies
Filing momentum
-48%
2021 to 2024 filing change
Volume has eased from a 2019 peak, not collapsed
Filings peaked at 375 in 2019 and had fallen to 130 by 2024, a -48% move over that three-year span. Because publication lags filing by about 18 months, the low counts in 2025-2026 are an artifact of the data cut-off, not proof the technology is being abandoned.
Source: filing trend, 2017-2026
Class skew
92.7%
of records classed under G02B
Claim activity sits overwhelmingly in optics, not mechanical connectors
G02B (optical elements and systems) covers 92.7% of the 5,968 records, while H01R (connectors and current collectors) sits at only 2.9% and B24B (grinding and polishing, relevant to ferrule finishing) at 2.1%. A search or drafting strategy that only watches H01R will miss most of the relevant prior art.
Source: IPC subclass composition
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Co-assignee filing pairs
| Assignee | Co-assignee | Shared families |
|---|---|---|
| TE Connectivity Corporation | Tyco Electronics Raychem BVBA | 36 |
| CommScope Technologies LLC | CommScope Connectivity Belgium BVBA | 35 |
| CommScope Technologies LLC | CommScope Asia Holdings LLC | 17 |
| Nanoprecision Products, Inc. | Quanta Computer (Florida), Inc. | 16 |
| Corning Optical Communications LLC | LUTHER JAMES P | 11 |
| ADC Telecommunications, Inc. | TE Connectivity Corporation | 11 |
| CommScope Connectivity Belgium BVBA | CommScope Asia Holdings LLC | 11 |
| Corning Optical Communications LLC | THEUERKORN THOMAS | 10 |
Ten co-assignee pairs appear in the dataset, with the strongest pairings linking corporate parents to regional or connectivity subsidiaries — a sign that some of the top-ranked filing volume is split across related entities rather than a single legal filer.
Source: Patsnap Eureka. Co-assignee relationships and derived observations. Derived from a Patsnap search on Data Center Fiber Plant and Connectors 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
Players
Who is filing, and where activity has slowed
Recent-year momentum figures show filings pulling back across several of the most active assignees, consistent with the broader -48% move in 2021-2024 volume — though the newest years remain incomplete.
Leader
694
records
A single filer holds the largest share
The top-ranked assignee holds 694 of the 5,968 records, well ahead of fifth place at 197 and tenth place at 114 — a steep drop-off after the leader rather than an even spread.
Source: assignee ranking
Momentum
-87% YoY
at the leading filer
Even active filers are pulling back
The leading assignee's latest-year count fell -87% year over year, and several other top filers show 0 or -100% latest-year activity, though this partly reflects publication lag rather than a stopped program.
Source: recent-year momentum by assignee
Long tail
50.3%
of 5,968 records outside top 10
Half the field sits outside the ten leading filers
The top 10 assignees combined hold 2,969 records, 49.7% of the 5,968 in scope — meaning just over half of all records belong to assignees outside that group, from regional telecoms to smaller component makers.
Source: concentration figures
Recent-year filing momentum by assignee
| Assignee | Recent year | YoY |
|---|---|---|
| CommScope Technologies LLC | 2 | -87% |
| CommScope Connectivity Belgium BVBA | 1 | 0% |
| Huawei Technologies Co., Ltd. | 1 | -67% |
| Corning Research & Development Corporation | 0 | -100% |
| Corning Optical Communications LLC | 0 | — |
| Senko Advanced Components, Inc. | 0 | -100% |
| ADC Telecommunications, Inc. | 0 | — |
| AT&T Corp. | 0 | — |
Source: Patsnap Eureka. Assignee-level momentum. Derived from a Patsnap search on Data Center Fiber Plant and Connectors 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
What's Next
Where to take this analysis
The composition and concentration figures point to specific next steps depending on whether the goal is freedom-to-operate, portfolio strategy or R&D scoping.
Map claims against the G02B core
With 92.7% of records in G02B, a freedom-to-operate check that only screens H01R or G01M will miss most relevant prior art; start any clearance search from the optics classification.
Explore in Patsnap EurekaWatch the co-assignee network
Several of the strongest co-assignee pairs link a corporate parent to a connectivity or regional subsidiary, which can indicate where a single group's filings are split across legal entities in searches.
Explore in Patsnap EurekaTrack the 2024 baseline, not 2025-2026
Use 2024's 130 filings as the last complete data point when judging momentum; treat any apparent drop in 2025-2026 as incomplete rather than a real slowdown.
Explore in Patsnap EurekaSource: Patsnap Eureka. Forward-looking reading of the same dataset. Derived from a Patsnap search on Data Center Fiber Plant and Connectors 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
FAQ
Common questions about this landscape
The assignee ranking in this dataset covers 100 companies, and it is a steep drop-off rather than an even spread: the leading assignee holds 694 of the 5,968 records, fifth place holds 197, and tenth place holds 114. Combined, the top 5 assignees account for 2,235 records, or 37.4% of all records in scope, while the top 10 account for 49.7%. That leaves just over half the field distributed across the remaining ranked companies, so a competitive review should not stop at the five best-known names.
Filings peaked at 375 in 2019 and had eased to 130 by 2024, a -48% change over that three-year span. It would be a mistake to call this a collapse: publication lags filing by roughly 18 months, so the very low counts recorded for 2025 and 2026 in this dataset reflect the cut-off date, not a stopped pipeline. The 2024 figure is the most recent year that can be treated as a reasonably complete baseline.
G02B, the optical elements and systems classification, covers 92.7% of the 5,968 records in this dataset, making it by far the dominant class. Connector-specific mechanical classes are much smaller by comparison — H01R sits at 2.9% and B24B, which covers grinding and polishing relevant to ferrule finishing, sits at 2.1%. Because a single record can carry more than one IPC code, these percentages do not sum to 100% and should be read as independent shares of the same 5,968-record total.
US20250383510A1 is a CommScope Technologies filing published 2025-12-18 for a dust cap that protects an optical fiber connector interface, plus the assembly of a connector subassembly together with that dust cap. Its stated focus is structural features that improve ease of use, robustness, and resistance to contaminant ingress that could damage fiber ends. It is a representative example of continued filing on connector accessories even as overall annual filing counts have eased since the 2019 peak.
The clearest signal is the gap between the dominant G02B classification at 92.7% of records and the much thinner mechanical and process classes such as H01R at 2.9% and B24B at 2.1% — areas like automated polarity verification, field-serviceable ferrule polishing, and dust cap contaminant sensing show comparatively little dedicated claim density. That does not guarantee those areas are unclaimed, but it does mean the density of prior art is much lower there than in the core optical claims, which is worth confirming with a targeted search before drafting.
Answers are grounded in the same dataset. Derived from a Patsnap search on Data Center Fiber Plant and Connectors 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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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.