PROOFSTACK 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 6/100, low — the brand is focused on defending its existing categories rather than expanding.
USPTO data refreshed July 11, 2026
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Sign in to claimHow is PROOFSTACK filing trademarks, and where is the portfolio expanding?
Filing Velocity (24 Months)
Filing Activity by NICE Class
Nice Class Distribution
Activity Timeline
No activity recorded yet.
Recent Filings
| Serial No. | Mark | Filing Date | Status | Classes | Owner |
|---|---|---|---|---|---|
| 99390260 | PROOFSTACK | Sep 12, 2025 | Registered | 009 Electronics & Software 042 Science & Technology | Dorrian Guy |
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FAQ: PROOFSTACK trademark portfolio
What trademarks does PROOFSTACK hold?
PROOFSTACK holds 1 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 9 (Electronics & Software), Class 42 (Science & Technology). The most recent filings are registered to Dorrian Guy.
How many trademarks does PROOFSTACK have at the USPTO?
WikiTrademarks tracks 1 USPTO trademark filings attributed to PROOFSTACK. The brand has been actively filing since September 2025. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does PROOFSTACK file most often?
PROOFSTACK'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 PROOFSTACK trademark?
The most recent filings under the PROOFSTACK mark are registered to Dorrian Guy. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is PROOFSTACK expanding into new categories?
The current WikiTrademarks Expansion Score for PROOFSTACK 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 PROOFSTACK trademark filings?
Click the Watch Brand button at the top of this page to add PROOFSTACK 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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