521 TAB 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 1/100, low — the brand is focused on defending its existing categories rather than expanding.
USPTO data refreshed October 10, 2026
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Filing Velocity (24 Months)
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Activity Timeline
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Recent Filings
| Serial No. | Mark | Filing Date | Status | Classes | Owner |
|---|---|---|---|---|---|
| 86739968 | 521 TAB | Aug 28, 2015 | Pending | 009 Electronics & Software | Shenzhen Hekvapor Technology Co.,Limited |
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FAQ: 521 TAB trademark portfolio
What trademarks does 521 TAB hold?
521 TAB 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 Shenzhen Hekvapor Technology Co.,Limited.
How many trademarks does 521 TAB have at the USPTO?
WikiTrademarks tracks 1 USPTO trademark filings attributed to 521 TAB. The brand has been actively filing since August 2015. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does 521 TAB file most often?
521 TAB'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 521 TAB trademark?
The most recent filings under the 521 TAB mark are registered to Shenzhen Hekvapor Technology Co.,Limited. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is 521 TAB expanding into new categories?
The current WikiTrademarks Expansion Score for 521 TAB 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 521 TAB trademark filings?
Click the Watch Brand button at the top of this page to add 521 TAB 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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