DAYU holds 4 USPTO trademark filings across 3 NICE classes. The largest concentration is in Class 11 (Lighting & HVAC) with 1 filings. The WikiTrademarks Expansion Score is 17/100, low — the brand is focused on defending its existing categories rather than expanding.
USPTO data refreshed September 16, 2026
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Filing Velocity (24 Months)
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Recent Filings
| Serial No. | Mark | Filing Date | Status | Classes | Owner |
|---|---|---|---|---|---|
| 99404866 | DAYU | Sep 22, 2025 | Pending | 011 Lighting & HVAC | Beijing Dayu Water-Saving Development Co., Ltd. |
| 99404868 | DAYU | Sep 22, 2025 | Pending | 017 Rubber & Insulation | Beijing Dayu Water-Saving Development Co., Ltd. |
| 99404869 | DAYU | Sep 22, 2025 | Pending | 021 Housewares | Beijing Dayu Water-Saving Development Co., Ltd. |
| 99404870 | DAYU | Sep 22, 2025 | Registered | 022 Ropes & Textiles | Beijing Dayu Water-Saving Development Co., Ltd. |
Weekly visibility reports showing how ChatGPT mentions DAYU, where you rank in the answer, the sentiment of the mention, and which sources ChatGPT cites.
FAQ: DAYU trademark portfolio
What trademarks does DAYU hold?
DAYU holds 4 USPTO trademark filings across 3 NICE classes. The largest concentration is in Class 11 (Lighting & HVAC), Class 17 (Rubber & Insulation), Class 21 (Housewares). The most recent filings are registered to Beijing Dayu Water-Saving Development Co., Ltd..
How many trademarks does DAYU have at the USPTO?
WikiTrademarks tracks 4 USPTO trademark filings attributed to DAYU. 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 DAYU file most often?
DAYU's most active class is NICE Class 11 (Lighting & HVAC), with 1 filings. The full distribution across all 3 classes is shown in the Nice Class Distribution panel on this page.
Who owns the DAYU trademark?
The most recent filings under the DAYU mark are registered to Beijing Dayu Water-Saving Development Co., Ltd.. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is DAYU expanding into new categories?
The current WikiTrademarks Expansion Score for DAYU is 17 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 DAYU trademark filings?
Click the Watch Brand button at the top of this page to add DAYU 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 DAYU to another owner · Browse all NICE classes · Most valuable brands
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