Where does C4X Discovery Limited rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), C4X Discovery Limited ranks #39,284 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 C4X Discovery Limited hold?

C4X Discovery Limited holds 6 US utility patents granted between 2020 and 2024, spanning 3 technology areas.

What is C4X Discovery Limited's Innovation Score?

C4X Discovery Limited has an Innovation Score of 27.2 out of 100 (23rd 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 C4X Discovery Limited focus on?

C4X Discovery Limited's top technology area is C07D (Heterocyclic Compounds) with 6 patents, ranking #1,244 of 3,165 assignees active in that subclass. Grants appear in 3 CPC subclasses total.

Is C4X Discovery Limited's patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for C4X Discovery Limited.

What does claim depth mean for C4X Discovery Limited's patents?

C4X Discovery Limited's patents average 12.8 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 C4X Discovery 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

C4X Discovery Limited

USPTO PatentsView assignee record - 6 granted patents across 3 technology areas, recorded in grant years 2020–2024. 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: C07D (Heterocyclic Compounds).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, C4X ranks #39,284 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 3 technology areas.

#39,284
of 49,997 US assignees by volume: 23rd percentile
by Innovation Score (27.2/100): 12.8
avg claims per patent

USPTO PatentsView assignee plate

Corpus R39284 · Foreign Corporation #39,284 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-RICH · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MICRO 6 grants
LOWER-Q #39,284/49,997
PHOTO-FINISH C7th
CPC-NARROW C07D · 3 areas
INNOV-THIN 27.2/100
CLAIMS-RICH 12.8 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2020–2024 · 5y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: C7th Limited (±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 C4X’s 27.2 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 6.7 pts (25%) Velocity 6.7 pts (25%) Breadth 6.1 pts (22%) Claim depth 7.7 pts (28%)

Qualcomm Incorporated · highest

85
Kinetic Furniture… · near

27
C4X Discovery · this assignee

27
Unitest · near

27
Brandenburger… · near

27
M & Q IP Leasing · near

27
3D Lighting… · lowest

7

What this shows C4X's Innovation Score is 27.2/100 (23rd 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 C4X?

Each dot is one of C4X’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). C4X’s own 12.8 claims/patent is ABOVE the 12.5 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

C4X vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where C4X's grants concentrate

C4X Discovery Limited is a focused PatentsView assignee: 3 CPC subclasses with 100% of grants classified under C07D (Heterocyclic Compounds). Peak complete grant year is 2020 (2 grants) versus a trough of 1 in 2021. By volume, C4X sits between C.C. Imex and Cakeboxx Technologies, LLC.

C4X's three-year grant acceleration

C4X Discovery Limited shows 3 grants in 2022–2024 against only 3 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

C C Imex

6
C C P Contact Pro…

6
C G AIR SYSTÈMES

6
C R D Centro Rice…

6
C7th

6
Cabin Management…

6
Cabinplant Intern…

6
Cakeboxx

6
C4X Discovery ◀

6

What this shows C4X holds 6 patents at rank #39,290, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near C4X

By rank, the assignees closest to #39,290 in granted patent volume.

Leaders in C07D (Heterocyclic Compounds)

Other assignees with the most granted patents in C4X's primary technology class.

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for C4X, neither rank-band nor same-CPC leaders (those blocks stay above). In C07D (Heterocyclic Compounds), C4X ranks #1,244 of 3,165 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (27 here).

Unitest Inc 27 Kinetic Furniture of Vermont Inc. 27 M & Q IP Leasing, LLC 27 Brandenburger Patentverwertung GbR 27

C4X's Innovation Score vs. every tracked assignee

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

27 23rd percentile higher than 23% 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 · 2020–2024

Grants by year

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

View data table

C4X Discovery Limited patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2020	2	33.3%
2021	1	16.7%
2023	1	16.7%
2024	2	33.3%

Which technologies does C4X Discovery Limited patent most?

C07D - Heterocyclic Compounds 6

A61P - Specific Therapeutic Activity OF Chemical Compounds OR Medicinal Preparations 5

C07C - Acyclic OR Carbocyclic Compounds 2

Top 3 of 3 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

C4X Discovery Limited's patent record in context - here's where to go next.

C4X Discovery Limited's lead technology class is C07D (Heterocyclic Compounds), 100% of its portfolio - see every assignee active in that class. Explore C07D
Ranked #39,284 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare C4X Discovery Limited against C.C. Imex, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 27.2/100 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.