Overall rank by patents
#433
Across all tracked assignees
USPTO 2015–2025 USPTO PatentsView Foreign Corporation
Largan Precision Co., Ltd.
USPTO PatentsView assignee record - 1,046 granted patents across 29 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: G02B (OPTICAL ELEMENTS, SYSTEMS OR APPARATUS).
1,046
Total patents granted
29
CPC technology areas
23.6
Avg claims per patent
+62%
5-year filing velocity
The verdict
Largan holds 1,046 US patents across 29 technology areas, rank #433 of 50,000 tracked assignees.
- #433
- of 50,000 US assignees by volume
- Top 2%
- by Innovation Score (64.1/100)
- 23.6
- avg claims per patent
- +62%
- filing velocity, last 5 yrs
Portfolio overview
Largan Precision Co., Ltd. has been granted 1,046 US utility patents between 2015 and 2025, placing Largan Precision Co., Ltd. at rank #433 across all assignees tracked by PlainPatent. This portfolio spans 29 distinct Cooperative Patent Classification (CPC) subclasses, averaging 23.6 claims per patent with primary concentration in G02B (OPTICAL ELEMENTS, SYSTEMS OR APPARATUS). As a Foreign Corporation, Largan Precision Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Largan sits between RTX Corporation (1,055 patents, rank #429) and Genentech, Inc. (1,039 patents, rank #437) - the closest US assignees by grant volume. The composite Innovation Score of 64.1/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.
Filing cadence tells the strategic story. Between 2020 and 2025 the company received 647 grants, compared with 399 in the 2015–2019 window, a +62% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.
Claim depth and technology breadth together indicate competitive posture. Largan Precision Co., Ltd.'s 23.6 average claims per patent reflects complex, broadly scoped inventions that are difficult for competitors to design around, while a multi-domain presence across 29 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Largan Precision Co., Ltd. against peers pursuing similar technology classes.
Who files at Largan's volume?
Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀
- RTX
RTX CORPORATION
1,055 patents
- Servicenow
ServiceNow, Inc.
1,052 patents
- Duke University
Duke University
1,050 patents
- University of Pit…
University of Pittsburgh—Of the Commonwealth System of Higher Education
1,050 patents
- Largan Precision ◀
LARGAN PRECISION CO., LTD.
1,046 patents
- Avaya
Avaya Inc.
1,044 patents
- Toyota Jidoshokki
KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
1,041 patents
- Mitsubishi Chemic…
MITSUBISHI CHEMICAL CORPORATION
1,040 patents
- Genentech
Genentech, Inc.
1,039 patents
What this shows Largan holds 1,046 patents at rank #433, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.
Companies ranked near Largan
By rank, the assignees closest to #433 in granted patent volume.
- RTX Corporation #429 · 1,055 patents
- Servicenow, Inc. #430 · 1,052 patents
- Duke University #431 · 1,050 patents
- University Of Pittsburgh—of The Commonwealth System Of Higher Education #432 · 1,050 patents
- Avaya Inc. #434 · 1,044 patents
- Kabushiki Kaisha Toyota Jidoshokki #435 · 1,041 patents
- Mitsubishi Chemical Corporation #436 · 1,040 patents
- Genentech, Inc. #437 · 1,039 patents
Leaders in G02B (Optical Elements)
Other assignees with the most granted patents in Largan's primary technology class.
- Samsung Electronics Co., Ltd. 4,608 in class
- Canon Kabushiki Kaisha 2,525 in class
- Fujifilm Corporation 2,173 in class
- BOE Technology Group Co., Ltd. 1,899 in class
- Olympus Corporation 1,893 in class
- SONY Group Corporation 1,572 in class
- Apple Inc. 1,367 in class
- Seiko Epson Corporation 1,332 in class
Largan's Innovation Score vs. every tracked assignee
Composite of portfolio volume, filing velocity, technology breadth, and claim depth (0–100)
64 Top 2% higher than 98% of 50,000 US assignees
Each bar is a band; taller bars hold more US assignees. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source USPTO PatentsView, PlainPatent Innovation Score · 2015–2025
Grants by year
Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.
View data table
| Year | Patents Granted | Share of Period |
|---|---|---|
| 2015 | 63 | 6.0% |
| 2016 | 71 | 6.8% |
| 2017 | 64 | 6.1% |
| 2018 | 80 | 7.6% |
| 2019 | 121 | 11.6% |
| 2020 | 111 | 10.6% |
| 2021 | 98 | 9.4% |
| 2022 | 98 | 9.4% |
| 2023 | 118 | 11.3% |
| 2024 | 124 | 11.9% |
| 2025 | 98 | 9.4% |
Which technologies does Largan Precision Co., Ltd. patent most?
Top 15 of 29 technology areas
Patent Moat Analysis
Portfolio Volume Strong
Tech Breadth Multi-domain
Claim Depth Complex
Velocity Accelerating
Frequently Asked Questions
How many patents does Largan Precision Co., Ltd. hold?
Largan Precision Co., Ltd. holds 1,046 US granted patents filed between 2015 and 2025, spanning 29 technology areas.
What is Largan Precision Co., Ltd.'s Innovation Score?
Largan Precision Co., Ltd. has an Innovation Score of 64.1 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).
What technology areas does Largan Precision Co., Ltd. focus on?
Largan Precision Co., Ltd.'s top technology area is G02B (OPTICAL ELEMENTS, SYSTEMS OR APPARATUS) with 1,018 patents. The company has filed patents in 29 CPC subclasses total.
Is Largan Precision Co., Ltd.'s patent filing rate increasing or decreasing?
Largan Precision Co., Ltd.'s recent filing velocity is +62% compared to the prior five-year period. This indicates accelerating innovation.
What does claim depth mean for Largan Precision Co., Ltd.'s patents?
Largan Precision Co., Ltd.'s patents average 23.6 claims each. This indicates complex, broadly scoped patents that are harder for competitors to design around.
How is the Largan Precision Co., Ltd. patent data sourced?
All patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office covering US granted utility patents from 2015 to 2025.
How to use this portfolio
Largan's 1,046 grants land it in the top 2% by Innovation Score, but volume alone doesn't tell you where the strength sits.
- Read that count against the largest US assignees before treating it as dominance - Largan ranks #433 of 50,000. Top 50 holders
- Most of this portfolio concentrates in G02B - see who else leads that technology area. G02B leaders
- Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works
Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.
Every figure on PlainPatent is rendered directly from USPTO source data, no number is typed in by an editor. This page draws directly on USPTO source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.