CPC technology class · H03

H03M - Coding

Coding; decoding; code conversion in general. 21,338 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

Compiled by PlainPatent · May 15, 2026

21,338
US patents granted: #2/10
in H03: 22.4%
H03 class share: +2%
5-yr velocity

The verdict

According to USPTO PatentsView, Coding ranks #98 of 670 CPC technology areas - 21,338 US patents granted since 2015, with recorded grant volume up 2% over five years.

#98
of 670 CPC technology areas: 21,338
US patents granted, 2015–2025: Samsung
leading assignee (1,180): +2%
grant velocity, last 5 yrs

How H03M's grant cadence moved

Between 2020–2024, H03M recorded 9,954 grants versus 9,742 in 2015–2019 (+2% equal-window velocity). Across complete years, output peaked in 2020 at 2,372 grants and bottomed in 2024 at 1,662 (+43% peak-over-trough). Lead assignee Huawei Technologies Co., Ltd. holds 3.1% of the class ; the top three share 9.0%.

Leaderboard read

H03M concentration, lead at 3.1%

Huawei Technologies Co., Ltd. leads this historical grant record at 3.1% of H03M - us corporation assignees hold 54% of class grants (7,385 of 13,628). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 3.1%
Top three share: 9.0%
Lead over #2: 18

Where H03M sits inside H03

Among 10 subclasses in H03 (Electronic Circuitry), H03M ranks #2 and holds 22.4% of the parent class's 95,387 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

H03K 30,872 H03F 14,014 H03H 11,825 H03L 6,701 H03G 5,213 H03B 3,110 H03D 1,165 H03J 659

Rising assignees active in H03M

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 Malikie Innovations Limited 74x 0 → 74 company-wide · 5 in H03M
#2 Ceremorphic, Inc. 62x 0 → 62 company-wide · 15 in H03M
#3 AyDeeKay LLC 47x 0 → 47 company-wide · 14 in H03M
#4 SK Hynix Nand Product Solutions Corp. 32x 0 → 32 company-wide · 10 in H03M
#5 Beijing Tenafe Electronic Technology Co., Ltd. 28x 1 → 28 company-wide · 9 in H03M

H03M grants by year, peak 2020 (2,372)

US utility-patent grants per year in H03M, 2015–2025 - recent five years are up 2% versus 2015–2019.

Huawei

658
Intel

640
Qualcomm Incorporated

613
Texas Instruments…

579
Sk hynix

414
Micron Technology

358
Korea Advanced…

304
Telefonaktiebolaget…

227
Infineon

225
Pure Storage

201
Western Digital

190
Realtek Semiconductor

189

What this shows Samsung is the most active filer in H03M, holding 1,180 of the 21,338 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 H03M
Rank	Company	Patents in H03M
#1	Huawei Technologies Co., Ltd.	658
#2	Intel Corporation	640
#3	Qualcomm Incorporated	613
#4	Texas Instruments Incorporated	579
#5	SK hynix Inc.	414
#6	Micron Technology, Inc.	358
#7	Korea Advanced Institute OF Science AND Technology	304
#8	Telefonaktiebolaget LM Ericsson (Publ)	227
#9	Infineon Technologies AG	225
#10	Pure Storage, Inc.	201
#11	Western Digital Technologies, Inc.	190
#12	Realtek Semiconductor Corp.	189
#13	Seagate Technology LLC	176
#14	Cirrus Logic, Inc.	175
#15	Analog Devices, Inc.	168
#16	NXP B.V.	161
#17	Mediatek Inc.	160
#18	Xilinx, Inc.	148
#19	Renesas Electronics Corporation	143
#20	EMC IP Holding Company LLC	136

Footprint here vs. claim strategy

Each dot is a leading H03M 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 H03M assignees by class footprint. Bubble size = patents in H03M. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near H03M's 21,338-grant footprint

Nationwide nearest neighbors for H03M (#98 of 670 by volume ; lead share 5.5%) - not the H03 parent-class siblings above.

Nearest by grant volume

C08J 21,338 G11B 21,500 B25J 21,590 B23K 21,060

Nearest by lead-assignee share

C10N 5.5% H03G 5.6% C10B 5.6% H03D 5.6%

Questions about H03M

Which company holds the most patents in H03M?

Samsung Electronics Co., Ltd. leads H03M with 1,180 patents (3.1% of the subclass). By PatentsView assignee type, us corporations account for 54% of class grants.

Which H03M assignees grew fastest recently?

Among assignees with ≥5 grants in H03M, Malikie Innovations Limited shows the highest company-wide grant multiple (74x: 0 grants in 2019–2021 → 74 in 2022–2024) while holding 5 patents in this subclass. Growth is company-wide, not class-only.

How does H03M compare inside parent class H03?

Inside H03 (Electronic Circuitry), H03M ranks #2 of 10 subclasses by grant volume and holds 22.4% of the parent class total. The largest sibling is H03K (30,872 grants).

What to do with this data

H03M in context - here's where to go next.

Huawei Technologies Co., Ltd. leads H03M with 658 grants in this class. See full portfolio
H03M ranks #98 of 670 by grant volume among all tracked CPC technology areas. See the ranking
Inside parent class H03, the largest sibling subclass is H03K with 30,872 grants. Explore H03K

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

Methodology - H03M figures are USPTO PatentsView granted-utility totals for this subclass (21,338 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.