Where does Stefanplast S.P.A. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Stefanplast S.P.A. ranks #21,832 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 Stefanplast S.P.A. hold?

Stefanplast S.P.A. holds 13 US utility patents granted between 2020 and 2023, spanning 4 technology areas.

What is Stefanplast S.P.A.'s Innovation Score?

Stefanplast S.P.A. has an Innovation Score of 17.6 out of 100 (4th 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 Stefanplast S.P.A. focus on?

Stefanplast S.P.A.'s top technology area is B29L (Indexing Scheme Associated With Subclass B29c, Relating TO Particular Articles) with 1 patents, ranking #1,585 of 2,540 assignees active in that subclass. Grants appear in 4 CPC subclasses total.

Is Stefanplast S.P.A.'s patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Stefanplast S.P.A..

What does claim depth mean for Stefanplast S.P.A.'s patents?

Stefanplast S.P.A.'s patents average 1.5 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 Stefanplast S.P.A. 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

Stefanplast S.P.A.

USPTO PatentsView assignee record - 13 granted patents across 4 technology areas, recorded in grant years 2020–2023. 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: B29L (Indexing Scheme Associated With Subclass B29c, Relating TO Particular Articles).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Stefanplast ranks #21,832 of 49,997 tracked US assignees by granted-patent volume, with 13 patents across 4 technology areas.

#21,832
of 49,997 US assignees by volume: 4th percentile
by Innovation Score (17.6/100): 1.5
avg claims per patent

USPTO PatentsView assignee plate

Corpus R21832 · Foreign Corporation #21,832 · 13 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-LOW · CLAIMS-SPARSE · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MICRO 13 grants
MID-PACK #21,832/49,997
PHOTO-FINISH Spec Seats
CPC-NARROW B29L · 4 areas
INNOV-LOW 17.6/100
CLAIMS-SPARSE 1.5 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2020–2023 · 4y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Spec Seats Technologies Inc. (±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 Stefanplast’s 17.6 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 9.1 pts (51%) Velocity 0.6 pts (3%) Breadth 7.1 pts (40%) Claim depth 0.9 pts (5%)

Qualcomm Incorporated · highest

85
Stefanplast S P A · this assignee

18
3D Lighting… · lowest

7

What this shows Stefanplast's Innovation Score is 17.6/100 (4th 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 Stefanplast?

Each dot is one of Stefanplast’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). Stefanplast’s own 1.5 claims/patent is at or below the 9.5 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Stefanplast's grants concentrate

Stefanplast S.P.A. is a focused PatentsView assignee: 4 CPC subclasses with 7.7% of grants classified under B29L (Indexing Scheme Associated With Subclass B29c, Relating TO Particular Articles). Peak complete grant year is 2021 (7 grants) versus a trough of 1 in 2023. By volume, Stefanplast sits between Spec Seats Technologies Inc. and Strata Safety Products, LLC.

Stefanplast's three-year grant acceleration

Stefanplast S.P.A. shows 1 grants in 2022–2024 against only 12 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.

Spec Seats

13
Specialty Earth S…

13
Sports Art Indust…

13
Sprue Safety Prod…

13
Steffes

13
Stephen P Shoemak…

13
Stokely-van Camp

13
Strata Safety Pro…

13
Stefanplast S P A ◀

13

What this shows Stefanplast holds 13 patents at rank #21,843, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Stefanplast

By rank, the assignees closest to #21,843 in granted patent volume.

Leaders in B29L (Indexing Scheme Associated With Subclass B29c)

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

Stefanplast's Innovation Score vs. every tracked assignee

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

18 4th percentile higher than 4% 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 · 2020–2023

Grants by year

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

View data table

Stefanplast S.P.A. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2020	5	38.5%
2021	7	53.8%
2023	1	7.7%

Which technologies does Stefanplast S.P.A. patent most?

B29L - Indexing Scheme Associated With Subclass B29c, Relating TO Particular Articles 1

B29C - Shaping OR Joining OF PLASTICS; Shaping OF Material IN A Plastic State, NOT Otherwise Provided FOR; After-treatment OF THE Shaped Products, e.g. Repairing 1

A47G - Household OR Table Equipment 1

B29K - Indexing Scheme Associated With Subclasses B29b, B29c OR B29d, Relating TO Moulding Materials OR TO Materials FOR ; Moulds, ; Reinforcements, Fillers OR Preformed Parts, e.g. Inserts 1

Top 4 of 4 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

Stefanplast S.P.A.'s patent record in context - here's where to go next.

Stefanplast S.P.A.'s lead technology class is B29L (Indexing Scheme Associated With Subclass B29c, Relating TO Particular Articles), 7.7% of its portfolio - see every assignee active in that class. Explore B29L
Ranked #21,832 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Stefanplast S.P.A. against Spec Seats Technologies Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 17.6/100 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.