Where does Portwell Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Portwell Inc. ranks #23,221 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 Portwell Inc. hold?

Portwell Inc. holds 12 US utility patents granted between 2015 and 2022, spanning 11 technology areas.

What is Portwell Inc.'s Innovation Score?

Portwell Inc. has an Innovation Score of 46.3 out of 100 (top 21% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Portwell Inc. focus on?

Portwell Inc.'s top technology area is G06F (Electric Digital Data Processing) with 7 patents, ranking #4,773 of 13,878 assignees active in that subclass. Grants appear in 11 CPC subclasses total.

Is Portwell Inc.'s patent grant rate increasing or decreasing?

Portwell Inc.'s recent grant velocity is -50% 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 Portwell Inc.'s patents?

Portwell Inc.'s patents average 9.5 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 Portwell Inc. 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

Portwell Inc.

USPTO PatentsView assignee record - 12 granted patents across 11 technology areas, recorded in grant years 2015–2022. 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: G06F (Electric Digital Data Processing).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Portwell ranks #23,221 of 49,997 tracked US assignees by granted-patent volume, with 12 patents across 11 technology areas.

#23,221
of 49,997 US assignees by volume: Top 21%
by Innovation Score (46.3/100): 9.5
avg claims per patent: -50%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R23221 · Foreign Corporation #23,221 · 12 grants

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

GRANTS-MICRO 12 grants
MID-PACK #23,221/49,997
PHOTO-FINISH Plastic Logic
CPC-FOCUS G06F · 11 areas
INNOV-PAR 46.3/100
CLAIMS-PAR 9.5 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -50% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Plastic Logic 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 Portwell’s 46.3 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 8.9 pts (19%) Velocity 20.0 pts (43%) Breadth 11.7 pts (25%) Claim depth 5.7 pts (12%)

Qualcomm Incorporated · highest

85
Portwell · this assignee

46
3D Lighting… · lowest

7

What this shows Portwell's Innovation Score is 46.3/100 (top 21% 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 Portwell?

Each dot is one of Portwell’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). Portwell’s own 9.5 claims/patent is at or below the 15.8 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Portwell's grants concentrate

Portwell Inc. is a focused PatentsView assignee: 11 CPC subclasses with 58.3% of grants classified under G06F (Electric Digital Data Processing). Peak complete grant year is 2018 (4 grants) versus a trough of 1 in 2015. By volume, Portwell sits between Plastic Logic Limited and Premier Magnesia, LLC.

Portwell's three-year grant acceleration

Portwell Inc. shows 3 grants in 2022–2024 against only 1 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.

Plastic Logic

12
PML Screening

12
Pola Chemical Ind…

12
Pontificia Univer…

12
POU Chen

12
Powerbrace

12
Powerdyne

12
Premier Magnesia

12
Portwell ◀

12

What this shows Portwell holds 12 patents at rank #23,177, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Portwell

By rank, the assignees closest to #23,177 in granted patent volume.

Leaders in G06F (Electric Digital Data Processing)

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

Portwell's Innovation Score vs. every tracked assignee

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

46 Top 21% higher than 79% 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 · 2015–2022

Grants by year

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

View data table

Portwell Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	8.3%
2016	1	8.3%
2017	2	16.7%
2018	4	33.3%
2021	1	8.3%
2022	3	25.0%

Which technologies does Portwell Inc. patent most?

G06F - Electric Digital Data Processing 7

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 4

H04L - Transmission OF Digital Information, e.g. Telegraphic Communication 1

H04W - Wireless Communication Networks 1

H04B - Transmission 1

H02H - Emergency Protective Circuit Arrangements 1

E05C - Bolts OR Fastening Devices FOR Wings, Specially FOR Doors OR Windows 1

E05B - LOCKS; Accessories THEREFOR; Handcuffs 1

G09F - DISPLAYING; ADVERTISING; SIGNS; Labels OR NAME-PLATES; Seals 1

G06K - Graphical Data Reading ; Presentation OF DATA; Record CARRIERS; Handling Record Carriers 1

G06Q - Information AND Communication Technology [ICT] Specially Adapted FOR Administrative, Commercial, Financial, Managerial OR Supervisory PURPOSES; Systems OR Methods Specially Adapted FOR Administrative, Commercial, Financial, Managerial OR Supervisory Purposes, NOT Otherwise Provided FOR 1

Top 11 of 11 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

Portwell Inc.'s patent record in context - here's where to go next.

Portwell Inc.'s lead technology class is G06F (Electric Digital Data Processing), 58.3% of its portfolio - see every assignee active in that class. Explore G06F
Ranked #23,221 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Portwell Inc. against Plastic Logic Limited, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 46.3/100 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.