759 patents currently held

148 more in force are now held by other companies

Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

The next term ends in Dec 2026. from the record

Free plan: 3 watched companies. Pro: unlimited.

Alerts on its grants, lapses and transfers.

106

Ending by 2030

Dec 2026

Next term end

370

Patent families

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045

notable patents fee due within 90 days all others Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know

Notable: the highest-ranked patents in this portfolio by citations and family size. Fee due within 90 days: a maintenance fee is due within 90 days of when this page was computed and not yet paid.

Notable patents

Ranked by citations and family size, against patents of the same kind granted the same year. How we rank

Notable

Method and Apparatus for Encoding/Decoding Video US 11,509,937

Cited by 21 later US patents, top 5% of utility patents granted in 2022 in our data. Protection runs to 2039.

Ends Apr 2039 · High confidence Also notable

Wireless Communication Method and Wireless Communication Terminal for Receiving Data from Plurality of Wireless Communication Terminals US 10,932,295

Cited by 43 later US patents, top 5% of utility patents granted in 2021 in our data. Protection runs to 2036.

Ends Jun 2036 · High confidence Also notable

Wireless Communication Method for Simultaneous Data Transmission, and Wireless Communication Terminal Using Same US 10,278,210

Cited by 72 later US patents, top 5% of utility patents granted in 2019 in our data, and renewed at 2 of 3 maintenance windows. Protection runs to 2035.

Ends Dec 2035 · High confidence

Formerly held, still cited

Notable

Wireless Communication Method and Wireless Communication Terminal, Which Use Discontinuous Channel US 10,687,281

Cited by 84 later US patents, top 5% of utility patents granted in 2020 in our data. Protection runs to 2037.

now held by Wilus Institute of Standards and Technology Inc.

Ends Jan 2037 · High confidence

Fee deadlines

Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.

2 fees due Nov 21 to 30, 2026 · next Nov 21
17 fees due Dec 4 to 30, 2026 · next Dec 4
7 fees due Jan 4 to 28, 2027 · next Jan 4
15 fees due Feb 1 to 28, 2027 · next Feb 1
12 fees due Mar 1 to 29, 2027 · next Mar 1
22 fees due Apr 3 to 30, 2027 · next Apr 3
19 fees due May 3 to 28, 2027 · next May 3
21 fees due Jun 3 to 24, 2027 · next Jun 3
8 fees due Jul 2 to 23, 2027 · next Jul 2
17 fees due Aug 4 to 27, 2027 · next Aug 4
16 fees due Sep 1 to 30, 2027 · next Sep 1
19 fees due Oct 2 to 28, 2027 · next Oct 2
12 fees due Nov 3 to 14, 2027 · next Nov 3

Which patents, and when each one lapses · Pro

Recent changes

12 of the patents on this record were granted since Aug 17, 2026
13 terms have ended since Aug 17, 2026

What they patent

The 5 largest of its 370 families, grouped by real patent family and labeled by the earliest filing in each. No technology classification is inferred from titles.

Method and Apparatus for Encoding/Decoding Images Using Adaptive Motion Vector Resolution	7 in force	to Aug 2033
Method and Apparatus for Encoding/Decoding Video	6 in force	to Apr 2039
Apparatus and Method for Applying Artificial Neural Network to Image Encoding or Decoding	6 in force	to Mar 2039
Wireless Communication Method and Wireless Communication Terminal for Receiving Data from Plurality of Wireless Communication Terminals	6 in force	to Jun 2036
Wireless Communication Method and Wireless Communication Terminal Using Training Signal	6 in force	to May 2036

Patents held now

Soonest term end first.

Patent	Title	Status	Expires	Confidence
US 7,477,190	Smart Antenna Beamforming Device in Communication System and Method Thereof held by Samsung Electronics Co., Ltd., Electronics and Telecommunications Research Institute, KT Corporation, SK Telecom Co., Ltd. and Hanaro Telecom, Inc. In force Term ends Dec 1, 2026 · High confidence	In force	Term ends Dec 1, 2026	High confidence
US 7,869,761	Radio Repeater for Mobile Communication System and Repeating Method Using the Same In force Term ends Dec 20, 2026 · High confidence	In force	Term ends Dec 20, 2026	High confidence
US 9,129,282	Near Field Communication Apparatus and Method for Supporting Security Modules In force Term ends Dec 20, 2026 · High confidence	In force	Term ends Dec 20, 2026	High confidence
US RE45,228	Video Telephony Service Method in Mobile Communication Network In force Term ends Dec 27, 2026 · Low confidence	In force	Term ends Dec 27, 2026	Low confidence
US 8,027,368	Terminal in Wireless Communication System and Ranging Method for Dynamically Changing Ranging Period Thereof held by KT Corporation In force Term ends Dec 28, 2026 · High confidence	In force	Term ends Dec 28, 2026	High confidence
US 8,160,254	Method for Managing Group Traffic Encryption Key in Wireless Portable Internet System held by Samsung Electronics Co., Ltd., Electronics and Telecommunications Research Institute, KT Corporation, SK Telecom Co., Ltd. and Hanaro Telecom, Inc. In force Term ends Mar 10, 2027 · High confidence	In force	Term ends Mar 10, 2027	High confidence
US 8,160,102	Method and Apparatus for Upper Level Protocol Message held by Samsung Electronics Co., Ltd., Electronics and Telecommunications Research Institute, KT Corporation, SK Telecom Co., Ltd. and Hanaro Telecom, Inc. In force Term ends Apr 26, 2027 · High confidence	In force	Term ends Apr 26, 2027	High confidence
US 8,125,976	Apparatus for Generating Down Link Signal, and Method and Apparatus for Cell Search in Cellular System In force Term ends Jul 22, 2027 · High confidence	In force	Term ends Jul 22, 2027	High confidence
US 7,821,961	Method for Generating /Changing Transport Connection Identifier in Portable Internet Network and Portable Subscriber Station Therefor held by Samsung Electronics Co., Ltd., Electronics and Telecommunications Research Institute, SK Telecom Co., Ltd., KT Corporation and Hanaro Telecom, Inc. In force Term ends Jul 24, 2027 · High confidence	In force	Term ends Jul 24, 2027	High confidence
US 7,941,104	Diversity Transmission Method and Transmitter of a Base Station Using the Same in a Mobile Commmunication System held by Samsung Electronics Co., Ltd., Electronics and Telecommunications Research Institute, KT Corporation, SK Telecom Co., Ltd. and Hanaro Telecom, Inc. In force Term ends Aug 13, 2027 · High confidence	In force	Term ends Aug 13, 2027	High confidence

10 of 759 patents shown.

Pro members see all 759.

Pro members: see all 759 patents

Also on record, not counted in the 759: 148 patents in force now held by others · 300 patents ended · 92 applications pending · 167 applications abandoned. List them

Sources and methods

Compiled from USPTO application file histories, grants and recorded assignments, with the company's own names reviewed by hand. How this record was built

Portfolio grouped automatically from ownership conveyances to the names matched to this company, usually every name that begins with its own, so it counts patents an affiliate holds; each list row names the holder of record. Security interests are excluded and ambiguous records are not reviewed by hand.

Fee due within 90 days marks a patent with a maintenance fee due within 90 days of the date this page was computed and not yet recorded paid, so it can end earlier than the bar shows. A fee left unpaid ends the patent at the close of the six month grace period that follows its due date, not on the due date itself. It is not a prediction that the fee will be missed.

Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

Export every term end as CSV · Pro

SK Telecom Co., Ltd.