CPC technology class · A41

A41C - Corsets

Corsets; brassieres. 669 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

Compiled by PlainPatent · May 15, 2026

669
US patents granted: #4/6
in A41: 7.8%
A41 class share: +43%
5-yr velocity

The verdict

According to USPTO PatentsView, Corsets ranks #508 of 670 CPC technology areas - 669 US patents granted since 2015, with recorded grant volume up 43% over five years.

#508
of 670 CPC technology areas: 669
US patents granted, 2015–2025: Nike
leading assignee (84): +43%
grant velocity, last 5 yrs

How A41C's grant cadence moved

Between 2020–2024, A41C recorded 353 grants versus 247 in 2015–2019 (+43% equal-window velocity). Across complete years, output peaked in 2024 at 90 grants and bottomed in 2015 at 27 (+233% peak-over-trough). Lead assignee Spanx, LLC holds 3.1% of the class ; the top three share 8.8%.

Leaderboard read

A41C concentration, lead at 3.1%

Spanx, LLC leads this historical grant record at 3.1% of A41C - us corporation assignees hold 57% of class grants (180 of 315). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 3.1%
Top three share: 8.8%
Lead over #2: 2

Where A41C sits inside A41

Among 6 subclasses in A41 (Wearing Apparel), A41C ranks #4 and holds 7.8% of the parent class's 8,592 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

A41D 5,359 A41B 979 A41F 683 A41H 522 A41G 380

Rising assignees active in A41C

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 Lipocosm, LLC 12x 1 → 12 company-wide · 8 in A41C
#2 Chiaro Technology Limited 9.50x 2 → 19 company-wide · 16 in A41C
#3 Lululemon Athletica Canada Inc. 2.24x 37 → 83 company-wide · 19 in A41C
#4 Sculpted U, Inc. 2.00x 1 → 2 company-wide · 7 in A41C
#5 Spanx, LLC 1.67x 12 → 20 company-wide · 21 in A41C

A41C grants by year, peak 2024 (90)

US utility-patent grants per year in A41C, 2015–2025 - recent five years are up 43% versus 2015–2019.

Spanx

21
Lululemon Athletica…

19
Hbi Branded Apparel…

19
Under Armour

18
Chiaro Technology

16
Mast Industries (Far…

13
Hanes Operations…

13
Regina Miracle…

12
Simple Wishes

10
Lipocosm

8
Wacoal

7
Sculpted U

7

What this shows Nike is the most active filer in A41C, holding 84 of the 669 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 A41C
Rank	Company	Patents in A41C
#1	Spanx, LLC	21
#2	Lululemon Athletica Canada Inc.	19
#3	HBI Branded Apparel Enterprises, LLC	19
#4	Under Armour, Inc.	18
#5	Chiaro Technology Limited	16
#6	Mast Industries (Far East) Limited	13
#7	Hanes Operations Europe SAS	13
#8	Regina Miracle International (Group) Limited	12
#9	Simple Wishes LLC	10
#10	Lipocosm, LLC	8
#11	Wacoal Corp.	7
#12	Sculpted U, Inc.	7
#13	SherryWear LLC	7
#14	Robotis Co., Ltd.	6
#15	The Gap, Inc.	6
#16	IFGCure Holdings, LLC	6
#17	Blanqi, LLC	6
#18	Cupid Foundations, Inc.	6
#19	Gold Flag Ltd.	6
#20	Evelyn & Bobbie, LLC	5

Footprint here vs. claim strategy

Each dot is a leading A41C 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 A41C assignees by class footprint. Bubble size = patents in A41C. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near A41C's 669-grant footprint

Nationwide nearest neighbors for A41C (#508 of 670 by volume ; lead share 12.6%) - not the A41 parent-class siblings above.

Nearest by grant volume

G06G 675 H03J 659 B03B 658 A41F 683

Nearest by lead-assignee share

D06B 12.5% H10B 12.5% C21D 12.6% B42C 12.5%

Questions about A41C

Which company holds the most patents in A41C?

Nike, Inc. leads A41C with 84 patents (3.1% of the subclass). By PatentsView assignee type, us corporations account for 57% of class grants.

Which A41C assignees grew fastest recently?

Among assignees with ≥5 grants in A41C, Lipocosm, LLC shows the highest company-wide grant multiple (12x: 1 grants in 2019–2021 → 12 in 2022–2024) while holding 8 patents in this subclass. Growth is company-wide, not class-only.

How does A41C compare inside parent class A41?

Inside A41 (Wearing Apparel), A41C ranks #4 of 6 subclasses by grant volume and holds 7.8% of the parent class total. The largest sibling is A41D (5,359 grants).

What to do with this data

A41C in context - here's where to go next.

Spanx, LLC leads A41C with 21 grants in this class. See full portfolio
A41C ranks #508 of 670 by grant volume among all tracked CPC technology areas. See the ranking
Inside parent class A41, the largest sibling subclass is A41D with 5,359 grants. Explore A41D

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

Methodology - A41C figures are USPTO PatentsView granted-utility totals for this subclass (669 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.