Where does Circassia Limited rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Circassia Limited ranks #24,103 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does Circassia Limited hold?

Circassia Limited holds 11 US utility patents granted between 2015 and 2018, spanning 7 technology areas.

What is Circassia Limited's Innovation Score?

Circassia Limited has an Innovation Score of 24.5 out of 100 (15th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Circassia Limited focus on?

Circassia Limited's top technology area is A61P (Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations) with 11 patents, ranking #1,740 of 6,058 assignees active in that subclass. Grants appear in 7 CPC subclasses total.

Is Circassia Limited's patent grant rate increasing or decreasing?

Circassia Limited's recent grant velocity is -100% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for Circassia Limited's patents?

Circassia Limited's patents average 11.0 claims each. This is an aggregate descriptive count from the grant record; it does not establish claim scope, legal strength, enforceability, or design-around risk.

How is the Circassia Limited 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Circassia Limited

USPTO PatentsView assignee record - 11 granted patents across 7 technology areas, recorded in grant years 2015–2018. Grant-trend analysis is cross-referenced to USPTO Patent Public Search; it does not measure application filings, current R&D, or legal strength. Primary class: A61P (Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Circassia ranks #24,103 of 49,997 tracked US assignees by granted-patent volume, with 11 patents across 7 technology areas.

#24,103
of 49,997 US assignees by volume: 15th percentile
by Innovation Score (24.5/100): 11.0
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R24103 · Foreign Corporation #24,103 · 11 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 11 grants
MID-PACK #24,103/49,997
PHOTO-FINISH Chenguang Biotech…
CPC-NARROW A61P · 7 areas
INNOV-THIN 24.5/100
CLAIMS-PAR 11.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Chenguang Biotech Group Co., Ltd. (±0 grants)

Instrument codes from this assignee’s USPTO PatentsView grant sheet: volume band, corpus rank, photo-finish peer, lead CPC, Innovation Score, claim depth, assignee type, velocity, and book completeness. Not a USPTO rating of patent strength.

How Circassia’s 24.5 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Volume 8.6 pts (35%) Velocity 0.0 pts (0%) Breadth 9.4 pts (38%) Claim depth 6.6 pts (27%)

Qualcomm Incorporated · highest

85
Circassia · this assignee

25
3D Lighting… · lowest

7

What this shows Circassia's Innovation Score is 24.5/100 (15th percentile of the PatentsView-derived corpus). The chart places that score against the nearest Innovation Score peers plus corpus poles, not a reprint of the volume ranking.

Does more volume mean deeper claims for Circassia?

Each dot is one of Circassia’s 8 nearest volume peers (same corpus rank neighbourhood as the chart above), placed by total granted patents (horizontal) against average claims per patent (vertical). Circassia’s own 11.0 claims/patent is at or below the 14.8 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Circassia vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Circassia's grants concentrate

Circassia Limited is a focused PatentsView assignee: 7 CPC subclasses with 100% of grants classified under A61P (Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations). Peak complete grant year is 2015 (4 grants) versus a trough of 1 in 2018. By volume, Circassia sits between Chenguang Biotech Group Co., Ltd. and ClearWater Holdings Ltd..

Chenguang Biotech…

11
Chinook Asia

11
Chongqing Jinkang…

11
Cibiem

11
Cirrus Design

11
Civilized Cycles…

11
Cleaning Systems

11
Clearwater Holdin…

11
Circassia ◀

11

What this shows Circassia holds 11 patents at rank #24,135, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Circassia

By rank, the assignees closest to #24,135 in granted patent volume.

Leaders in A61P (Specific Therapeutic Activity OF Chemical Compounds OR Me…)

Other assignees with the most granted patents in Circassia's primary technology class.

Circassia's Innovation Score vs. every tracked assignee

Composite of portfolio volume, grant velocity, technology breadth, and claim depth (0–100)

25 15th percentile higher than 15% of 49,997 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

USPTO utility patent grants by year · 2015–2018

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Circassia Limited patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	4	36.4%
2016	3	27.3%
2017	3	27.3%
2018	1	9.1%

Which technologies does Circassia Limited patent most?

A61P - Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations 11

A61K - Preparations FOR Medical, Dental OR Toiletry Purposes 10

C07K - Peptides 7

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 6

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 1

C07J - Steroids 1

B01D - Separation 1

Top 7 of 7 technology areas

More on this record

Data Source

USPTO PatentsView, US granted patents 2015–2025

View all rankings → How is Innovation Score calculated?

What to do with this data

Circassia Limited's patent record in context - here's where to go next.

Circassia Limited's lead technology class is A61P (Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations), 100% of its portfolio - see every assignee active in that class. Explore A61P
Ranked #24,103 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Circassia Limited against Chenguang Biotech Group Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 24.5/100 blends volume, velocity, technology breadth, and claim depth. How it's calculated

Figures reflect USPTO PatentsView grant data through May 2026; pending applications not yet granted are not counted.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the USPTO PatentsView database. Consult a qualified professional before making decisions based on this data.

Read our methodology - how this data is sourced, computed, and verified.

Data sources used on this page

USPTO PatentsView - the disambiguated bulk patent-grant, assignee, and CPC data this page's figures are derived from. patentsview.org
Cooperative Patent Classification (CPC) - the joint USPTO/EPO classification scheme used to group patents by technology area. cooperativepatentclassification.org
USPTO Patent Public Search - the official interface to verify the status of any individual patent. ppubs.uspto.gov

Compiled by PlainPatent, US Patent Intelligence Editorial Process · May 15, 2026

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.