Silgan Holdings Inc (SLGN)
NYSE: SLGN · Metal Cans · Norwalk, CT · filing with the SEC since 1994
Grade5.2
◀ Past 5.5● Present 5.3▶ Future 4.9
Patents
US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 2026643 patents granted to the 32 names below, as the owner printed on each patent when it was granted. A later sale, a lapse or an expiry is not read, so this is what was granted to Silgan Holdings Inc’s names, not what it holds today.
Patents granted
643
378 utility, 261 design, 4 reissue, 1976 to Dec 31, 2025
Granted in 2025
21
Against 26 in 2024 and 42 in 2023
Applications published
325
18 of them in 2025
Names they are printed under
32
a subsidiary, its own name
By yearGrantedApplications published
Each pair is one calendar year. Applications are published about eighteen months after filing, so the newest years read low.
What they are aboutgrants since 2021
Handling56
Chemical engineering32
Other special machines13
Mechanical elements3
Measurement3
Telecommunications2
Other consumer goods2
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name32 counted
Silgan Dispensing Systems Corporation a subsidiary
US, as the owner printed on each patent
63 published
Silgan Containers LLC a subsidiary
US, as the owner printed on each patent
21 published
Portola Packaging, Inc. a subsidiary
US, as the owner printed on each patent. 8 more under the same name are not counted (printed in GB)
24 published
Silgan White Cap LLC a subsidiary
US, as the owner printed on each patent
10 published
Silgan Plastics LLC a subsidiary
US, as the owner printed on each patent
17 published
Silgan White Cap LLC a subsidiary
named as the applicant on its applications, in US
69 published
Silgan Dispensing Systems Slatersville, LLC a subsidiary
US, as the owner printed on each patent
9 published
Silgan Containers LLC a subsidiary
named as the applicant on its applications, in US
22 published
Silgan Plastics LLC a subsidiary
named as the applicant on its applications, in US
22 published
SILGAN HOLDINGS INC. its own name
US, as the owner printed on each patent
7 published
Weener Plastics Group B.V. a subsidiary
named as the applicant on its applications, in NL
13 published
Silgan Dispensing Systems Corporation a subsidiary
named as the applicant on its applications, in US
11 published
Weener Plastik GmbH a subsidiary
DE, as the owner printed on each patent
2 published
Silgan Dispensing Systems Le Treport S.A.S. a subsidiary
FR, as the owner printed on each patent. 3 more under the same name are not counted (printed in US)
1 published
Silgan Dispensing Systems Netherlands B.V. a subsidiary
NL, as the owner printed on each patent
3 published
WEENER PLASTICS GROUP B.V. a subsidiary
NL, as the owner printed on each patent
2 published
Weener Plastik GmbH & Co., KG a subsidiary
DE, as the owner printed on each patent
2 published
SILGAN HOLDINGS INC. its own name
named as the applicant on its applications, in US. 1 more under the same name are not counted (printed in DE)
6 published
Silgan Specialty Packaging LLC a subsidiary
named as the applicant on its applications, in US
5 published
Silgan White Cap Americas LLC a subsidiary
US, as the owner printed on each patent
0 published
SILGAN DISPENSING SYSTEMS LE TREPORT S.A.S. a subsidiary
named as the applicant on its applications, in FR. 3 more under the same name are not counted (printed in US)
4 published
Silgan Dispensing Systems Hemer GmbH a subsidiary
DE, as the owner printed on each patent. 1 more under the same name are not counted (printed in US)
1 published
Silgan Plastic Food Containers Corporation a subsidiary
US, as the owner printed on each patent
0 published
Weener Plastics Netherlands B.V. a subsidiary
named as the applicant on its applications, in NL
4 published
WEENER PLASTIK GMBH a subsidiary
named as the applicant on its applications, in DE
3 published
Weener Plastics Netherlands B.V. a subsidiary
NL, as the owner printed on each patent
0 published
SILGAN DISPENSING SYSTEMS HEMER GMBH a subsidiary
named as the applicant on its applications, in DE. 2 more under the same name are not counted (printed in US)
2 published
Silgan Plastic Food Containers Corporation a subsidiary
named as the applicant on its applications, in US
2 published
Silgan Specialty Packaging LLC a subsidiary
US, as the owner printed on each patent
0 published
Portola Packaging, Inc., a Delaware Corp. a subsidiary
US, as the owner printed on each patent
0 published
SILGAN DISPENSING SYSTEMS MILANO S.R.L. a subsidiary
IT, as the owner printed on each patent
0 published
SILGAN DISPENSING SYSTEMS THOMASTON CORPORATION a subsidiary
US, as the owner printed on each patent
0 published
Names not counted (6)
Silgan Dispensing Systems (Wuxi) Co., Ltd.
Most of its patents print US; this name counts in CN. 0 granted and 4 published under it are not counted.
Silgan Dispensing Systems Vicenza S.r.l.
Most of its patents print US; this name counts in IT. 3 granted and 1 published under it are not counted.
Silgan Dispensing Systems (Wuxi) Co., Ltd.
Most of its patents print US; this name counts in CN. 1 granted and 2 published under it are not counted.
Silgan Dispensing Systems Barcelona, S.L.
Most of its patents print US; this name counts in ES. 1 granted and 0 published under it are not counted.
Silgan Dispensing Systems Milano S.r.l.
Most of its patents print US; this name counts in IT. 0 granted and 1 published under it are not counted.
Silgan Dispensing Systems Vicenza S.r.l.
Most of its patents print US; this name counts in IT. 0 granted and 1 published under it are not counted.
Newest grantseach row opens the USPTO’s own copy
Newest applications publishedan application is a clue, never a plan
| Published | Application | Title | Field | Owner as printed |
|---|---|---|---|---|
| Dec 18, 2025 | 2025/0382112 | Closure with Improved Drainage | Handling | Silgan White Cap LLC |
| Dec 18, 2025 | 2025/0382107 | Snap Cap with Tamper Evidence | Handling | Silgan White Cap LLC |
| Oct 30, 2025 | 2025/0333225 | Protrusion on Container Neck | Handling | Silgan White Cap LLC |
| Oct 16, 2025 | 2025/0320035 | Tethered, Hinged Closure | Handling | Silgan White Cap LLC |
| Oct 9, 2025 | 2025/0313371 | Thin-Walled Metal Cup | Handling | Silgan Containers LLC |
| Aug 14, 2025 | 2025/0256894 | TAMPER-EVIDENT CLOSURE WITH TAMPER-EVIDENT STRIP AND HOLDING CHAMBER FOR TAMPER-EVIDENT STRIP | Handling | Weener Plastics Group B.V. |
| Jul 24, 2025 | 2025/0236439 | Closure with Modified Retaining Band | Handling | Silgan White Cap LLC |
| Jun 5, 2025 | 2025/0178794 | Tethered, Hinged Closure with Modified Primary Slit | Handling | Silgan White Cap LLC |
| May 22, 2025 | 2025/0162759 | AEROSOL CAP WITH RUPTURE LINE | Handling | Weener Plastics Group B.V. |
| Mar 20, 2025 | 2025/0091776 | Closure with Liner | Handling | Silgan White Cap LLC |
What it applied for, 2024 to 2025: Handling 32 · Chemical engineering 6 · Other special machines 1 · Other consumer goods 1.
A patent is counted where the owner printed on it when it was granted carries the company’s own name, a former name, the name of a subsidiary its annual report lists, or its own name with a patent-holding phrase (Technology Licensing, Intellectual Property and the like), once the legal form, case and punctuation are set aside, and prints a country that name counts in. PatentsView’s data are published under the Creative Commons Attribution 4.0 licence. Source: PatentsView's granted patents and pre-grant publications, disambiguated, from the USPTO's Open Data Portal, through Dec 31, 2025, read Oct 27, 2026.