STIRLING PDF holds 2 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 9 (Electronics & Software) with 1 filings. The WikiTrademarks Expansion Score is 3/100, low — the brand is focused on defending its existing categories rather than expanding.
USPTO data refreshed September 8, 2026
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Filing Velocity (24 Months)
Filing Activity by NICE Class
Nice Class Distribution
Activity Timeline
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Recent Filings
| Serial No. | Mark | Filing Date | Status | Classes | Owner |
|---|---|---|---|---|---|
| 99156557 | STIRLING PDF | Apr 25, 2025 | Pending | 009 Electronics & Software | STIRLING PDF INC. |
| 99156559 | STIRLING PDF | Apr 25, 2025 | Pending | 042 Science & Technology | STIRLING PDF INC. |
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FAQ: STIRLING PDF trademark portfolio
What trademarks does STIRLING PDF hold?
STIRLING PDF holds 2 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 STIRLING PDF INC..
How many trademarks does STIRLING PDF have at the USPTO?
WikiTrademarks tracks 2 USPTO trademark filings attributed to STIRLING PDF. The brand has been actively filing since April 2025. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does STIRLING PDF file most often?
STIRLING PDF'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 STIRLING PDF trademark?
The most recent filings under the STIRLING PDF mark are registered to STIRLING PDF INC.. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is STIRLING PDF expanding into new categories?
The current WikiTrademarks Expansion Score for STIRLING PDF is 3 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 STIRLING PDF trademark filings?
Click the Watch Brand button at the top of this page to add STIRLING PDF 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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