WINDOWS NT holds 1 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 9 (Electronics & Software) with 1 filings. The WikiTrademarks Expansion Score is 0/100, low — the brand is focused on defending its existing categories rather than expanding.
USPTO data refreshed July 10, 2026
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Filing Velocity (24 Months)
Nice Class Distribution
Activity Timeline
No activity recorded yet.
Recent Filings
| Serial No. | Mark | Filing Date | Status | Classes | Owner |
|---|---|---|---|---|---|
| 74212523 | WINDOWS NT | Oct 11, 1991 | Abandoned | 009 Electronics & Software | Microsoft Corporation |
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FAQ: WINDOWS NT trademark portfolio
What trademarks does WINDOWS NT hold?
WINDOWS NT holds 1 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 9 (Electronics & Software). The most recent filings are registered to Microsoft Corporation.
How many trademarks does WINDOWS NT have at the USPTO?
WikiTrademarks tracks 1 USPTO trademark filings attributed to WINDOWS NT. The brand has been actively filing since October 1991. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does WINDOWS NT file most often?
WINDOWS NT's most active class is NICE Class 9 (Electronics & Software), with 1 filings. The full distribution across all 0 classes is shown in the Nice Class Distribution panel on this page.
Who owns the WINDOWS NT trademark?
The most recent filings under the WINDOWS NT mark are registered to Microsoft Corporation. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is WINDOWS NT expanding into new categories?
The current WikiTrademarks Expansion Score for WINDOWS NT is 0 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 WINDOWS NT trademark filings?
Click the Watch Brand button at the top of this page to add WINDOWS NT 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.
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