DUCT DOCTOR holds 1 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 37 (Construction & Repair) with 1 filings. The WikiTrademarks Expansion Score is 1/100, low — the brand is focused on defending its existing categories rather than expanding.
USPTO data refreshed October 19, 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 |
|---|---|---|---|---|---|
| 87162919 | DUCT DOCTOR | Sep 07, 2016 | Pending | 037 Construction & Repair | IAQ, INC. |
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FAQ: DUCT DOCTOR trademark portfolio
What trademarks does DUCT DOCTOR hold?
DUCT DOCTOR holds 1 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 37 (Construction & Repair). The most recent filings are registered to IAQ, INC..
How many trademarks does DUCT DOCTOR have at the USPTO?
WikiTrademarks tracks 1 USPTO trademark filings attributed to DUCT DOCTOR. The brand has been actively filing since September 2016. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does DUCT DOCTOR file most often?
DUCT DOCTOR's most active class is NICE Class 37 (Construction & Repair), with 1 filings. The full distribution across all 0 classes is shown in the Nice Class Distribution panel on this page.
Who owns the DUCT DOCTOR trademark?
The most recent filings under the DUCT DOCTOR mark are registered to IAQ, INC.. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is DUCT DOCTOR expanding into new categories?
The current WikiTrademarks Expansion Score for DUCT DOCTOR is 1 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 DUCT DOCTOR trademark filings?
Click the Watch Brand button at the top of this page to add DUCT DOCTOR 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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