Where does E Ink Holdings Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), E Ink Holdings Inc. ranks #544 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 E Ink Holdings Inc. hold?

E Ink Holdings Inc. holds 824 US utility patents granted between 2015 and 2025, spanning 102 technology areas.

What is E Ink Holdings Inc.'s Innovation Score?

E Ink Holdings Inc. has an Innovation Score of 63.0 out of 100 (top 2% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is E Ink Holdings Inc.'s patent grant rate increasing or decreasing?

E Ink Holdings Inc.'s recent grant velocity is +4% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

What does claim depth mean for E Ink Holdings Inc.'s patents?

E Ink Holdings Inc.'s patents average 12.6 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 E Ink Holdings 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

E Ink Holdings Inc.

Q: What technology areas does E Ink Holdings Inc. focus on?

E Ink Holdings Inc.'s top technology area is G02F (Optical Devices OR Arrangements FOR THE Control OF Light BY Modification OF THE Optical Properties OF THE Media OF THE Elements Involved THEREIN; Non-linear OPTICS; Frequency-changing OF LIGHT; Optical Logic ELEMENTS; Optical ANALOGUE/DIGITAL Converters) with 477 patents, ranking #17 of 1,354 assignees active in that subclass. Grants appear in 102 CPC subclasses total.

USPTO PatentsView assignee record - 824 granted patents across 102 technology areas, recorded in grant years 2015–2025. 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: G02F (Optical Devices OR Arrangements FOR THE Control OF Light BY Modification OF THE Optical Properties OF THE Media OF THE Elements Involved THEREIN; Non-linear OPTICS; Frequency-changing OF LIGHT; Optica).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, E ranks #544 of 49,997 tracked US assignees by granted-patent volume, with 824 patents across 102 technology areas.

#544
of 49,997 US assignees by volume: Top 2%
by Innovation Score (63.0/100): 12.6
avg claims per patent: +4%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R544 · Foreign Corporation #544 · 824 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-STRONG · CLAIMS-RICH · TYPE-FRNCORP · VEL-FLAT · BOOK-FULL

GRANTS-MID 824 grants
TOP-DECILE #544/49,997
PHOTO-FINISH Kaneka
CPC-WIDE G02F · 102 areas
INNOV-STRONG 63.0/100
CLAIMS-RICH 12.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT +4% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Kaneka Corporation (±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 E’s 63.0 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 23.2 pts (37%) Velocity 7.2 pts (11%) Breadth 25.0 pts (40%) Claim depth 7.6 pts (12%)

Qualcomm Incorporated · highest

85
Chengdu University… · near

63
E Ink Holdings · this assignee

63
Hayward Industries · near

63
Smith & Nephew · near

63
Spotify AB · near

63
3D Lighting… · lowest

7

What this shows E's Innovation Score is 63.0/100 (top 2% 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 E?

Each dot is one of E’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). E’s own 12.6 claims/patent is at or below the 13.1 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

How E's grant cadence moved

Between 2020–2024, E Ink Holdings Inc. received 390 grants versus 375 in 2015–2019 (+4% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2019 at 93 grants and bottomed in 2016 at 59. Lead class G02F accounts for 57.9% of the portfolio across 102 subclasses. Volume neighbours: STMicroelectronics (Rousset) SAS (#540) and National Institute of Advanced Industrial Science and Technology (#548).

E's three-year grant acceleration

From 2019–2021 to 2022–2024, E Ink Holdings Inc. moved from 232 to 251 grants (1.08x the prior three-year total, a multiple, not a CAGR). Among 3,296 tracked assignees with ≥100 grants and ≥20 prior-period grants, that multiple ranks #997. See the growth leaderboard.

Stmicroelectronic…

828
University of Mas…

828
Shanghai United I…

825
Silicon Laborator…

825
Kaneka

824
E Ink Holdings ◀

824
Industry-academic…

823
NGK Spark Plug

823
National Institut…

822

What this shows E holds 824 patents at rank #544, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near E

By rank, the assignees closest to #544 in granted patent volume.

Leaders in G02F (Optical Devices OR Arrangements FOR THE Control OF Light…)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for E, neither rank-band nor same-CPC leaders (those blocks stay above). In G02F (Optical Devices OR Arrangements FOR THE Control OF Light…), E ranks #17 of 1,354 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (63 here).

Spotify AB 63 Smith & Nephew PLC 63 Hayward Industries, Inc. 63 Chengdu University OF Technology 63

Similar claim depth

Nearest assignees by average claims per patent (12.6 here).

Henkel AG & Co. KGaA 12.6 avg Shenzhen Royole Technologies Co., Ltd. 12.6 avg Prince Mohammad BIN Fahd University 12.6 avg Asensus Surgical US, Inc. 12.6 avg

E's Innovation Score vs. every tracked assignee

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

63 Top 2% higher than 98% 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 · 2015–2025

Grants by year

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

View data table

E Ink Holdings Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	77	9.3%
2016	59	7.2%
2017	84	10.2%
2018	62	7.5%
2019	93	11.3%
2020	70	8.5%
2021	69	8.4%
2022	70	8.5%
2023	93	11.3%
2024	88	10.7%
2025partial year	59	7.2%

Which technologies does E Ink Holdings Inc. patent most?

G02F - Optical Devices OR Arrangements FOR THE Control OF Light BY Modification OF THE Optical Properties OF THE Media OF THE Elements Involved THEREIN; Non-linear OPTICS; Frequency-changing OF LIGHT; Optical Logic ELEMENTS; Optical ANALOGUE/DIGITAL Converters 477

G09G - Arrangements OR Circuits FOR Control OF Indicating Devices Using Static Means TO Present Variable Information 325

G02B - Optical Elements, Systems OR Apparatus 127

G06F - Electric Digital Data Processing 107

H10D - Inorganic Electric Semiconductor Devices 100

H10K - Organic Electric Solid-state Devices 48

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 40

H01L - Semiconductor Devices NOT Covered BY Class H10 39

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 37

G09F - DISPLAYING; ADVERTISING; SIGNS; Labels OR NAME-PLATES; Seals 30

C09D - Coating Compositions, e.g. Paints, Varnishes OR LACQUERS; Filling PASTES; Chemical Paint OR INK REMOVERS; INKS; Correcting FLUIDS; WOODSTAINS; Pastes OR Solids FOR Colouring OR PRINTING; USE OF Materials Therefor 25

C09B - Organic Dyes OR Closely-related Compounds FOR Producing Dyes ; , e.g. PIGMENTS; MORDANTS; Lakes 23

C09J - ADHESIVES; Non-mechanical Aspects OF Adhesive Processes IN GENERAL; Adhesive Processes NOT Provided FOR ELSEWHERE; USE OF Materials AS Adhesives 18

Y10T - Technical Subjects Covered BY Former US Classification 17

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 16

Top 15 of 102 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

E Ink Holdings Inc.'s patent record in context - here's where to go next.

E Ink Holdings Inc.'s lead technology class is G02F (Optical Devices OR Arrangements FOR THE Control OF Light BY Modification OF THE Optical Properties OF THE Media OF THE Elements Involved THEREIN; Non-linear OPTICS; Frequency-changing OF LIGHT; Optica), 57.9% of its portfolio - see every assignee active in that class. Explore G02F
Ranked #544 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare E Ink Holdings Inc. against STMicroelectronics (Rousset) SAS, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 63.0/100 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.