PURIFYAIR holds 1 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 11 (Lighting & HVAC) with 1 filings. The WikiTrademarks Expansion Score is 4/100, low — the brand is focused on defending its existing categories rather than expanding.
USPTO data refreshed October 2, 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 |
|---|---|---|---|---|---|
| 99603998 | PURIFYAIR | Jan 20, 2026 | Registered | 011 Lighting & HVAC | Renfei Chen |
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FAQ: PURIFYAIR trademark portfolio
What trademarks does PURIFYAIR hold?
PURIFYAIR holds 1 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 11 (Lighting & HVAC). The most recent filings are registered to Renfei Chen.
How many trademarks does PURIFYAIR have at the USPTO?
WikiTrademarks tracks 1 USPTO trademark filings attributed to PURIFYAIR. The brand has been actively filing since January 2026. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does PURIFYAIR file most often?
PURIFYAIR's most active class is NICE Class 11 (Lighting & HVAC), with 1 filings. The full distribution across all 0 classes is shown in the Nice Class Distribution panel on this page.
Who owns the PURIFYAIR trademark?
The most recent filings under the PURIFYAIR mark are registered to Renfei Chen. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is PURIFYAIR expanding into new categories?
The current WikiTrademarks Expansion Score for PURIFYAIR is 4 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 PURIFYAIR trademark filings?
Click the Watch Brand button at the top of this page to add PURIFYAIR 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.
More on this portfolio: Compare PURIFYAIR to another owner · Browse all NICE classes · Most valuable brands
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