BAK4 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)
Nice Class Distribution
Activity Timeline
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Recent Filings
| Serial No. | Mark | Filing Date | Status | Classes | Owner |
|---|---|---|---|---|---|
| 90156141 | BAK4 | Sep 03, 2020 | Pending | 009 Electronics & Software | Luo Hongdi |
Weekly visibility reports showing how ChatGPT mentions BAK4, where you rank in the answer, the sentiment of the mention, and which sources ChatGPT cites.
FAQ: BAK4 trademark portfolio
What trademarks does BAK4 hold?
BAK4 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 Luo Hongdi.
How many trademarks does BAK4 have at the USPTO?
WikiTrademarks tracks 1 USPTO trademark filings attributed to BAK4. The brand has been actively filing since September 2020. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does BAK4 file most often?
BAK4'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 BAK4 trademark?
The most recent filings under the BAK4 mark are registered to Luo Hongdi. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is BAK4 expanding into new categories?
The current WikiTrademarks Expansion Score for BAK4 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 BAK4 trademark filings?
Click the Watch Brand button at the top of this page to add BAK4 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 BAK4 to another owner · Browse all NICE classes · Most valuable brands
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