MAYFIELD holds 4 USPTO trademark filings across 1 NICE class. The largest concentration is in Class 10 (Medical Devices) with 1 filings. The WikiTrademarks Expansion Score is 6/100, 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
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Recent Filings
| Serial No. | Mark | Filing Date | Status | Classes | Owner |
|---|---|---|---|---|---|
| 99466243 | MAYFIELD | Oct 28, 2025 | Registered | 043 Food & Drink Services | Magnuson Company LLC |
| 99185272 | MAYFIELD | May 14, 2025 | Registered | 025 Clothing & Footwear | Mayfield Design Studio, LLC |
| 86713569 | MAYFIELD | Aug 03, 2015 | Pending | 035 Advertising & Business 036 Insurance & Finance 041 Education & Entertainment | Mayfield Fund, L.L.C. |
| 73539795 | MAYFIELD | May 28, 1985 | Abandoned | 010 Medical Devices | SM USA, INC. |
Weekly visibility reports showing how ChatGPT mentions MAYFIELD, where you rank in the answer, the sentiment of the mention, and which sources ChatGPT cites.
FAQ: MAYFIELD trademark portfolio
What trademarks does MAYFIELD hold?
MAYFIELD holds 4 USPTO trademark filings across 1 NICE class. The largest concentration is in Class 10 (Medical Devices), Class 43 (Food & Drink Services), Class 35 (Advertising & Business). The most recent filings are registered to Magnuson Company LLC.
How many trademarks does MAYFIELD have at the USPTO?
WikiTrademarks tracks 4 USPTO trademark filings attributed to MAYFIELD. The brand has been actively filing since May 1985. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does MAYFIELD file most often?
MAYFIELD's most active class is NICE Class 10 (Medical Devices), with 1 filings. The full distribution across all 1 classes is shown in the Nice Class Distribution panel on this page.
Who owns the MAYFIELD trademark?
The most recent filings under the MAYFIELD mark are registered to Magnuson Company LLC. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is MAYFIELD expanding into new categories?
The current WikiTrademarks Expansion Score for MAYFIELD is 6 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 MAYFIELD trademark filings?
Click the Watch Brand button at the top of this page to add MAYFIELD 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 MAYFIELD to another owner · Browse all NICE classes · Most valuable brands
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