Trademark owner · USPTO register · rebuilt nightly

Wellmark International

66 live US trademarks, filing since 1962.

Live marks
66
registered + pending
Registered
63
on the Principal Register
Pending
3
applications in progress
Filed in 2026
0
by filing date
Classes used
3
of 45 Nice classes
First filing
1962
64 years on the register
At a glanceplain-language reads of the register
Mostly pharmaceuticals: 60 of 66 live marks are in Class 5. Chemicals (Class 1) is next with 6.
5 registrations have a maintenance filing due in the next 12 months.
Filing activityapplications per year, by filing date
0 6 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Marks held on the register, by filing date. 2026 is year to date.

Portfolio by classlive marks · rank among filers in that class

A multi-class mark counts once per class. Rank shown where the owner is in the class's top 50.

Latest activity

What Wellmark International filed most recently.

MarkClassFiledBasisStatusSerial
DUPLEX-G 5 Mar 25, 2025 — registered Jan 6 99102388
CLEARLEAF 1 Oct 30, 2023 — opposition 98246246
CLEAR LEAF 1 Oct 30, 2023 — registered Nov 26 98246320
FORMITROL 5 Sep 29, 2023 — registered Jan 21 98204074
DUOVEX 5 Apr 5, 2023 intent to use published 97874637
ECOSTRIKE 5 Feb 17, 2023 — published 97799162
AVIATOR 5 Jan 18, 2023 — registered Aug 5 97759534
EXHALT WDG 5 Dec 27, 2022 — registered Mar 26 97732336
DURASTRIKE 5 Nov 18, 2021 — registered Nov 1 97132499
STARBAR RED-VIVAL 5 Jan 26, 2021 — registered Feb 14 90488968
Recently registeredlast 12 months
DUPLEX-G · Cl. 5 · Reg. 8,092,640
Jan 6, 2026

Registration starts the maintenance clock: a Section 8 declaration is due between years 5 and 6.

Maintenance windows aheadnext 12 months · from registration dates
ALTOSAND · Reg. 1,053,504 · registered Nov 1976
Section 8 & 9 renewal (year 50)
Nov 30, 2025 → Nov 30, 2026
QUIKSTRIKE · Reg. 2,034,468 · registered Jan 1997
Section 8 & 9 renewal (year 30)
Jan 28, 2026 → Jan 28, 2027
WELLMARK · Reg. 3,236,263 · registered May 2007
Section 8 & 9 renewal (year 20)
May 1, 2026 → May 1, 2027
PRENTOX · Reg. 830,448 · registered Jun 1967
Section 8 & 9 renewal (year 60)
Jun 20, 2026 → Jun 20, 2027
EGGBUSTERS · Reg. 3,313,001 · registered Oct 2007
Section 8 & 9 renewal (year 20)
Oct 16, 2026 → Oct 16, 2027

A filing missed by the due date enters a six-month grace period, then the registration cancels.

Other large filers in Class 5Full ranking →
Common questions

About Wellmark International trademarks.

How many trademarks does Wellmark International have?

66 live US trademarks as of October 23, 2026: 63 registered and 3 pending applications. None have been filed in 2026 so far.

What does Wellmark International sell, according to its trademarks?

Mostly pharmaceuticals (Class 5, 60 live marks). Also chemicals (Class 1) and medical & beauty services (Class 44).

Who owns the STRIKE trademark?

STRIKE is owned by Wellmark International. It was registered on July 30, 1963 (Reg. No. 0753566) and is live. The same owner holds 65 other live US marks.

When did Wellmark International first file a trademark?

Its oldest live US filing dates from 1962: STRIKE, filed May 28, 1962.

Know the morning after Wellmark International files.

Watch this company in Thorgate and get an alert for every new application, registration, publication and lapse, with the opposition deadline already worked out. Or monitor your own marks for conflicts with theirs.

Data: USPTO trademark bulk files, processed nightly by Thorgate. Last rebuilt October 23, 2026. Counts cover the US federal register only, not state or foreign marks. Owner names are shown as recorded by the USPTO. This page reports public-record facts and dates and is not legal advice. For the official record of any mark, follow its serial number to USPTO TSDR.