Alliant Energy Corporation
18 live US trademarks, filing since 1997.
Marks held on the register, by filing date. 2026 is year to date.
A multi-class mark counts once per class. Rank shown where the owner is in the class's top 50.
What Alliant Energy Corporation filed most recently.
| Mark | Class | Filed | Basis | Status | Serial |
|---|---|---|---|---|---|
| ALLIANT ENERGY LIGHTLINE | 39, 41 | Dec 11, 2025 | — | published | 99542786 |
| ALLIANT ENERGY LIGHTLINE | 39, 41 | Dec 11, 2025 | — | pending | 99542799 |
| ALLIANT ENERGY ADVANTAGE | 35 | Nov 3, 2025 | — | published | 99475863 |
| RENEWABLE ENERGY IMPACT | 35 | Sep 30, 2025 | — | published | 99421079 |
| THE POWER CHRONICLES | 16, 41 | Nov 20, 2024 | — | registered Mar 31 | 98864413 |
| INTERSTATE POWER AND LIGHT | 9, 16, 37, 39, 40 | Jan 27, 2023 | — | registered Feb 27 | 97771378 |
| WISCONSIN POWER AND LIGHT | 9, 16, 37, 39, 40 | Jan 27, 2023 | — | registered Feb 27 | 97771386 |
| TECHREFRESH | 37, 40, 42 | May 6, 2022 | — | registered Jan 9 | 97399135 |
| POWER HOUSE ALLIANT ENERGY | 41, 43 | Oct 21, 2020 | — | registered Aug 1 | 90268461 |
| ALLIANT ENERGY POWERHOUSE | 41, 43 | Oct 1, 2020 | — | registered Aug 1 | 90230073 |
Registration starts the maintenance clock: a Section 8 declaration is due between years 5 and 6.
A filing missed by the due date enters a six-month grace period, then the registration cancels.
Spellings are merged when they differ only in punctuation or legal suffix. Anything else stays separate rather than guessed.
About Alliant Energy Corporation trademarks.
How many trademarks does Alliant Energy Corporation have?
18 live US trademarks as of October 23, 2026: 14 registered and 4 pending applications. None have been filed in 2026 so far.
What does Alliant Energy Corporation sell, according to its trademarks?
Mostly education & entertainment (Class 41, 8 live marks). Also advertising & business (Class 35) and transport & storage (Class 39).
Who owns the POWERHOUSE trademark?
POWERHOUSE is owned by Alliant Energy Corporation. It was registered on July 28, 1998 (Reg. No. 2176549) and is live. The same owner holds 17 other live US marks.
When did Alliant Energy Corporation first file a trademark?
Its oldest live US filing dates from 1997: POWERHOUSE, filed May 12, 1997.
Know the morning after Alliant Energy 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.