STEM PLUG holds 2 USPTO trademark filings across 1 NICE class. The largest concentration is in Class 41 (Education & Entertainment) with 1 filings. The WikiTrademarks Expansion Score is 6/100, low — the brand is focused on defending its existing categories rather than expanding.
USPTO data refreshed August 30, 2026
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Filing Velocity (24 Months)
Nice Class Distribution
Activity Timeline
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Recent Filings
| Serial No. | Mark | Filing Date | Status | Classes | Owner |
|---|---|---|---|---|---|
| 99629932 | STEM PLUG | Feb 02, 2026 | Registered | 028 Games & Toys | Stem Plug |
| 97938077 | STEM PLUG | May 16, 2023 | Pending | 041 Education & Entertainment | Gilliam, Richard Samuel Thomas |
Weekly visibility reports showing how ChatGPT mentions STEM PLUG, where you rank in the answer, the sentiment of the mention, and which sources ChatGPT cites.
FAQ: STEM PLUG trademark portfolio
What trademarks does STEM PLUG hold?
STEM PLUG holds 2 USPTO trademark filings across 1 NICE class. The largest concentration is in Class 41 (Education & Entertainment), Class 28 (Games & Toys). The most recent filings are registered to Stem Plug.
How many trademarks does STEM PLUG have at the USPTO?
WikiTrademarks tracks 2 USPTO trademark filings attributed to STEM PLUG. The brand has been actively filing since May 2023. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does STEM PLUG file most often?
STEM PLUG's most active class is NICE Class 41 (Education & Entertainment), with 1 filings. The full distribution across all 1 classes is shown in the Nice Class Distribution panel on this page.
Who owns the STEM PLUG trademark?
The most recent filings under the STEM PLUG mark are registered to Stem Plug. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is STEM PLUG expanding into new categories?
The current WikiTrademarks Expansion Score for STEM PLUG is 6 out of 100, which is low — the brand is focused on defending its existing categories rather than expanding. The score combines NICE class breadth, filing velocity, and the rate of cross-class movement from the brand's filing history.
How can I track new STEM PLUG trademark filings?
Click the Watch Brand button at the top of this page to add STEM PLUG to your Watchlist. New filings show up on your WikiTrademarks dashboard within 24 to 48 hours of being public, alongside any class expansions, status changes, or assignment events.
More on this portfolio: Compare STEM PLUG to another owner · Browse all NICE classes · Most valuable brands
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