DOOR GUARDIAN 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 8, 2026
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Filing Velocity (24 Months)
Nice Class Distribution
Activity Timeline
No activity recorded yet.
Ownership & Assignment History
2 records| Date | From | To |
|---|---|---|
| Nov 11, 2025 |
SECURE CARE PRODUCTS, LLC
|
VALSTONE SYSTEMS CORPORATION INC.
SAINT-LAURENT
|
| Aug 8, 2014 |
SECURE CARE PRODUCTS, INC
|
SECURE CARE PRODUCTS, LLC
CONCORD, NEW HAMPSHIRE
|
Recent Filings
| Serial No. | Mark | Filing Date | Status | Classes | Owner |
|---|---|---|---|---|---|
| 77887985 | DOOR GUARDIAN | Dec 07, 2009 | Abandoned | 009 Electronics & Software | VALSTONE SYSTEMS CORPORATION INC. |
Weekly visibility reports showing how ChatGPT mentions DOOR GUARDIAN, where you rank in the answer, the sentiment of the mention, and which sources ChatGPT cites.
FAQ: DOOR GUARDIAN trademark portfolio
What trademarks does DOOR GUARDIAN hold?
DOOR GUARDIAN 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 VALSTONE SYSTEMS CORPORATION INC..
How many trademarks does DOOR GUARDIAN have at the USPTO?
WikiTrademarks tracks 1 USPTO trademark filings attributed to DOOR GUARDIAN. The brand has been actively filing since December 2009. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does DOOR GUARDIAN file most often?
DOOR GUARDIAN'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 DOOR GUARDIAN trademark?
The most recent filings under the DOOR GUARDIAN mark are registered to VALSTONE SYSTEMS CORPORATION INC.. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is DOOR GUARDIAN expanding into new categories?
The current WikiTrademarks Expansion Score for DOOR GUARDIAN 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 DOOR GUARDIAN trademark filings?
Click the Watch Brand button at the top of this page to add DOOR GUARDIAN 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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