Trademark owner · USPTO register · rebuilt nightly

Dart Container Corporation

52 live US trademarks, filing since 1959.

Live marks
52
registered + pending
Registered
51
on the Principal Register
Pending
1
applications in progress
Filed in 2026
0
by filing date
Classes used
8
of 45 Nice classes
First filing
1959
67 years on the register
At a glanceplain-language reads of the register
Mostly housewares & glass: 38 of 52 live marks are in Class 21. Furniture (Class 20) is next with 9.
4 registrations have a maintenance filing due in the next 12 months.
Filing activityapplications per year, by filing date
0 4 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 Dart Container Corporation filed most recently.

MarkClassFiledBasisStatusSerial
DART 21 May 19, 2025 — registered Oct 14 99191209
FIRST USE TO NEXT LIFE 21 Nov 5, 2024 — published 98837711
BOLD HOLD 21 Aug 23, 2023 — registered Oct 15 98146241
PROPLANET DART CONTAINER 16, 20, 21 Apr 26, 2023 — registered Feb 18 97908437
CHILLGUARD 21 Aug 13, 2021 — registered Apr 19 90881720
NEXTLIFE 21 Apr 26, 2021 — registered Dec 20 90671264
PROPLANET 20, 21 Dec 22, 2020 — registered May 7 90402446
PROPLANET 20 Dec 22, 2020 — registered Oct 5 90402469
SAFESEAL 20 Jun 12, 2020 — registered Jun 27 88961801
SAFESEAL 21 Jun 12, 2020 — registered Apr 18 88961810
Maintenance windows aheadnext 12 months · from registration dates
DTX · Reg. 5,170,889 · registered Mar 2017
Section 8 & 9 renewal (year 10)
Mar 28, 2026 → Mar 28, 2027
THERMOGUARD · Reg. 5,266,368 · registered Aug 2017
Section 8 & 9 renewal (year 10)
Aug 15, 2026 → Aug 15, 2027
PROPLANET · Reg. 6,510,336 · registered Oct 2021
Section 8 declaration (years 5–6)
Oct 5, 2026 → Oct 5, 2027
CLEARSEAL · Reg. 3,321,078 · registered Oct 2007
Section 8 & 9 renewal (year 20)
Oct 23, 2026 → Oct 23, 2027

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

Other large filers in Class 21Full ranking →
Names on the registerwhat this page merges, and what it leaves out
DART CONTAINER CORPORATION · 52 live marks
included
Dart Transit Company · 15 live marks · may be a related company
separate page

Spellings are merged when they differ only in punctuation or legal suffix. Anything else stays separate rather than guessed.

Common questions

About Dart Container Corporation trademarks.

How many trademarks does Dart Container Corporation have?

52 live US trademarks as of October 23, 2026: 51 registered and 1 pending applications. None have been filed in 2026 so far.

What does Dart Container Corporation sell, according to its trademarks?

Mostly housewares & glass (Class 21, 38 live marks). Also furniture (Class 20) and hand tools (Class 8).

Who owns the CONEX trademark?

CONEX is owned by Dart Container Corporation. It was registered on June 28, 1960 (Reg. No. 0700011) and is live. The same owner holds 51 other live US marks.

When did Dart Container Corporation first file a trademark?

Its oldest live US filing dates from 1959: CONEX, filed September 17, 1959.

Know the morning after Dart Container Corporation 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.