Where does Exfo Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Exfo Inc. ranks #3,278 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 Exfo Inc. hold?

Exfo Inc. holds 114 US utility patents granted between 2015 and 2025, spanning 21 technology areas.

What is Exfo Inc.'s Innovation Score?

Exfo Inc. has an Innovation Score of 48.5 out of 100 (top 16% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

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

Exfo 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 Exfo Inc.'s patents?

Exfo Inc.'s patents average 15.1 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 Exfo 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

Exfo Inc.

Q: What technology areas does Exfo Inc. focus on?

Exfo Inc.'s top technology area is G01M (Testing Static OR Dynamic Balance OF Machines OR STRUCTURES; Testing OF Structures OR Apparatus, NOT Otherwise Provided FOR) with 47 patents, ranking #17 of 1,420 assignees active in that subclass. Grants appear in 21 CPC subclasses total.

USPTO PatentsView assignee record - 114 granted patents across 21 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: G01M (Testing Static OR Dynamic Balance OF Machines OR STRUCTURES; Testing OF Structures OR Apparatus, NOT Otherwise Provided FOR).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Exfo ranks #3,278 of 49,997 tracked US assignees by granted-patent volume, with 114 patents across 21 technology areas.

#3,278
of 49,997 US assignees by volume: Top 16%
by Innovation Score (48.5/100): 15.1
avg claims per patent: +4%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R3278 · Foreign Corporation #3,278 · 114 grants

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

GRANTS-MID 114 grants
TOP-DECILE #3,278/49,997
PHOTO-FINISH Chia Tai Tianqing…
CPC-FOCUS G01M · 21 areas
INNOV-PAR 48.5/100
CLAIMS-RICH 15.1 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT +4% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Chia Tai Tianqing Pharmaceutical 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 Exfo’s 48.5 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 16.4 pts (34%) Velocity 6.9 pts (14%) Breadth 16.2 pts (33%) Claim depth 9.0 pts (19%)

Qualcomm Incorporated · highest

85
Arcelik Anonim Sirketi · near

49
Exfo · this assignee

49
Ion Beam Applications · near

49
Quantum Machines · near

49
Terex USA · near

49
3D Lighting… · lowest

7

What this shows Exfo's Innovation Score is 48.5/100 (top 16% 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 Exfo?

Each dot is one of Exfo’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). Exfo’s own 15.1 claims/patent is ABOVE the 13.4 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Exfo's grants concentrate

Exfo Inc. is a focused PatentsView assignee: 21 CPC subclasses with 41.2% of grants classified under G01M (Testing Static OR Dynamic Balance OF Machines OR STRUCTURES; Testing OF Structures OR Apparatus, NOT Otherwise Provided FOR). Peak complete grant year is 2017 (18 grants) versus a trough of 7 in 2015. By volume, Exfo sits between Chia Tai Tianqing Pharmaceutical Group Co., Ltd. and Janssen Vaccines & Prevention B.V..

Exfo's three-year grant acceleration

From 2019–2021 to 2022–2024, Exfo Inc. moved from 32 to 33 grants (1.03x 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 #1,101. See the growth leaderboard.

Chia Tai Tianqing…

114
Creeled

114
Dreamwell

114
Equinor Energy AS

114
Hiroshima Univers…

114
Hankook Tire

114
Hong Kong Baptist…

114
Janssen Vaccines…

114
Exfo ◀

114

What this shows Exfo holds 114 patents at rank #3,278, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Exfo

By rank, the assignees closest to #3,278 in granted patent volume.

Leaders in G01M (Testing Static OR Dynamic Balance OF Machines OR Structures)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Exfo, neither rank-band nor same-CPC leaders (those blocks stay above). In G01M (Testing Static OR Dynamic Balance OF Machines OR Structures), Exfo ranks #17 of 1,420 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (49 here).

Arcelik Anonim Sirketi 49 Ion Beam Applications 49 Terex USA, LLC 49 Quantum Machines 49

Similar claim depth

Nearest assignees by average claims per patent (15.1 here).

Hongfujin Precision Industry (WUHAN) Co., Ltd. 15.1 avg Masimo Corporation 15.1 avg Changxin Memory Technologies, Inc. 15.1 avg Keygene N.V. 15.1 avg

Exfo's Innovation Score vs. every tracked assignee

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

49 Top 16% higher than 84% 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

Exfo Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	7	6.1%
2016	11	9.6%
2017	18	15.8%
2018	9	7.9%
2019	9	7.9%
2020	9	7.9%
2021	14	12.3%
2022	16	14.0%
2023	7	6.1%
2024	10	8.8%
2025partial year	4	3.5%

Which technologies does Exfo Inc. patent most?

G01M - Testing Static OR Dynamic Balance OF Machines OR STRUCTURES; Testing OF Structures OR Apparatus, NOT Otherwise Provided FOR 47

H04B - Transmission 43

G02B - Optical Elements, Systems OR Apparatus 24

H04L - Transmission OF Digital Information, e.g. Telegraphic Communication 10

G06F - Electric Digital Data Processing 7

H04W - Wireless Communication Networks 6

H04J - Multiplex Communication 6

G06T - Image Data Processing OR Generation, IN General 6

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 5

H04N - Pictorial Communication, e.g. Television 5

G01D - Measuring NOT Specially Adapted FOR A Specific VARIABLE; Arrangements FOR Measuring TWO OR More Variables NOT Covered IN A Single Other SUBCLASS; Tariff Metering APPARATUS; Measuring OR Testing NOT Otherwise Provided FOR 4

G01J - Measurement OF Intensity, Velocity, Spectral Content, Polarisation, Phase OR Pulse Characteristics OF Infrared, Visible OR Ultraviolet LIGHT; COLORIMETRY; Radiation Pyrometry 3

H04Q - Selecting 3

G06N - Computing Arrangements Based ON Specific Computational Models 3

G01B - Measuring Length, Thickness OR Similar Linear DIMENSIONS; Measuring ANGLES; Measuring AREAS; Measuring Irregularities OF Surfaces OR Contours 2

Top 15 of 21 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

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

Exfo Inc.'s lead technology class is G01M (Testing Static OR Dynamic Balance OF Machines OR STRUCTURES; Testing OF Structures OR Apparatus, NOT Otherwise Provided FOR), 41.2% of its portfolio - see every assignee active in that class. Explore G01M
Ranked #3,278 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Exfo Inc. against Chia Tai Tianqing Pharmaceutical Group Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 48.5/100 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.