CPC technology class · F21

F21V - Functional Features Or Details Of Lighting Devices Or Sys…

Functional features or details of lighting devices or systems thereof; structural combinations of lighting devices with other articles, not otherwise provided for. 23,679 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

Compiled by PlainPatent · May 15, 2026

23,679
US patents granted: #1/6
in F21: 32.8%
F21 class share: -7%
5-yr velocity

The verdict

According to USPTO PatentsView, Functional Features Or Details Of Lighting Devices Or Sys… ranks #84 of 670 CPC technology areas - 23,679 US patents granted since 2015, with recorded grant volume down 7% over five years.

#84
of 670 CPC technology areas: 23,679
US patents granted, 2015–2025: Signify Holding B V
leading assignee (604): -7%
grant velocity, last 5 yrs

How F21V's grant cadence moved

Between 2020–2024, F21V recorded 10,502 grants versus 11,233 in 2015–2019 (-7% equal-window velocity). Across complete years, output peaked in 2019 at 2,961 grants and bottomed in 2023 at 1,737 (+70% peak-over-trough). Lead assignee Signify Holding B.V. holds 2.6% of the class ; the top three share 5.5%.

Leaderboard read

F21V concentration, lead at 2.6%

Signify Holding B.V. leads this historical grant record at 2.6% of F21V - foreign corporation assignees hold 55% of class grants (8,762 of 15,953). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 2.6%
Top three share: 5.5%
Lead over #2: 237

Where F21V sits inside F21

Among 6 subclasses in F21 (Lighting), F21V ranks #1 and holds 32.8% of the parent class's 72,153 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

F21Y 17,865 F21S 15,705 F21K 7,021 F21W 6,556 F21L 1,327

Rising assignees active in F21V

Company-wide grant multiples (2022–2024 vs 2019–2021) among assignees with ≥5 patents in this subclass. Growth is company-wide; class patent counts are subclass-specific.

#1 Korrus, Inc. 71x 0 → 71 company-wide · 55 in F21V
#2 HLI Solutions, Inc. 46x 0 → 46 company-wide · 26 in F21V
#3 W Schonbek LLC 42x 1 → 42 company-wide · 5 in F21V
#4 Dongguan Huihuan Lighting Co., Ltd 35x 0 → 35 company-wide · 13 in F21V
#5 Hubbell Lighting, Inc. 32x 0 → 32 company-wide · 19 in F21V

F21V grants by year, peak 2019 (2,961)

US utility-patent grants per year in F21V, 2015–2025 - recent five years are down 7% versus 2015–2019.

Signify Holding B V

604
Panasonic Intellectual…

367
Cree

340
Lg Innotek

339
Nichia

323
Osram

274
Abl Ip Holding

261
Philips Lighting…

257
Cooper

232
Lumileds

218
Koniniklijke Philips

216
Jiaxing Super…

201

What this shows Signify Holding B V is the most active filer in F21V, holding 604 of the 23,679 patents in this class. Concentration at the top signals how contestable this technology area is for new entrants.

View data table

Top patent holders in CPC subclass F21V
Rank	Company	Patents in F21V
#1	Signify Holding B.V.	604
#2	Panasonic Intellectual Property Management Co., Ltd.	367
#3	Cree, Inc.	340
#4	LG Innotek Co., Ltd.	339
#5	Nichia Corporation	323
#6	Osram GmbH	274
#7	ABL IP Holding LLC	261
#8	Philips Lighting Holding B.V.	257
#9	Cooper Technologies Company	232
#10	Lumileds LLC	218
#11	Koniniklijke Philips N.V.	216
#12	Jiaxing Super Lighting Electric Appliance Co., Ltd	201
#13	Xiamen ECO Lighting Co. Ltd.	200
#14	Hubbell Incorporated	189
#15	Ledvance GMBH	161
#16	Eaton Intelligent Power Limited	156
#17	Opple Lighting Co., Ltd.	151
#18	Koito Manufacturing Co., Ltd.	144
#19	Valeo Vision	132
#20	Ideal Industries Lighting LLC	125

Footprint here vs. claim strategy

Each dot is a leading F21V assignee, placed by how many patents it holds in this class (horizontal) against its company-wide average claims per patent (vertical) - a read on whether the class is led by broad-but-shallow filers or focused deep-claim players.

Top 14 F21V assignees by class footprint. Bubble size = patents in F21V. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near F21V's 23,679-grant footprint

Nationwide nearest neighbors for F21V (#84 of 670 by volume ; lead share 2.6%) - not the F21 parent-class siblings above.

Nearest by grant volume

H10N 23,338 C08F 23,159 B29L 23,135 B82Y 23,042

Nearest by lead-assignee share

G01C 2.6% G01F 2.6% A45F 2.6% G08B 2.6%

Questions about F21V

Which company holds the most patents in F21V?

Signify Holding B.V. leads F21V with 604 patents (2.6% of the subclass). By PatentsView assignee type, foreign corporations account for 55% of class grants.

Which F21V assignees grew fastest recently?

Among assignees with ≥5 grants in F21V, Korrus, Inc. shows the highest company-wide grant multiple (71x: 0 grants in 2019–2021 → 71 in 2022–2024) while holding 55 patents in this subclass. Growth is company-wide, not class-only.

How does F21V compare inside parent class F21?

Inside F21 (Lighting), F21V ranks #1 of 6 subclasses by grant volume and holds 32.8% of the parent class total. The largest sibling is F21Y (17,865 grants).

What to do with this data

F21V in context - here's where to go next.

Signify Holding B.V. leads F21V with 604 grants in this class. See full portfolio
F21V ranks #84 of 670 by grant volume among all tracked CPC technology areas. See the ranking
Inside parent class F21, the largest sibling subclass is F21Y with 17,865 grants. Explore F21Y

Figures reflect USPTO PatentsView grant data through 2026-05-15; pending applications not yet granted are not counted.

Methodology - F21V figures are USPTO PatentsView granted-utility totals for this subclass (23,679 grants in the tracked window).

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.