SILFEX holds 2 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 7 (Machinery) with 1 filings. The WikiTrademarks Expansion Score is 34/100, low — the brand is focused on defending its existing categories rather than expanding.
USPTO data refreshed June 15, 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 |
|---|---|---|---|---|---|
| 99713175 | SILFEX | Mar 19, 2026 | Registered | 007 Machinery | Lam Research Corporation |
| 99713219 | SILFEX | Mar 19, 2026 | Registered | 009 Electronics & Software | Lam Research Corporation |
Weekly visibility reports showing how ChatGPT mentions SILFEX, where you rank in the answer, the sentiment of the mention, and which sources ChatGPT cites.
FAQ: SILFEX trademark portfolio
What trademarks does SILFEX hold?
SILFEX holds 2 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 7 (Machinery), Class 9 (Electronics & Software). The most recent filings are registered to Lam Research Corporation.
How many trademarks does SILFEX have at the USPTO?
WikiTrademarks tracks 2 USPTO trademark filings attributed to SILFEX. The brand has been actively filing since March 2026. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does SILFEX file most often?
SILFEX's most active class is NICE Class 7 (Machinery), with 1 filings. The full distribution across all 0 classes is shown in the Nice Class Distribution panel on this page.
Who owns the SILFEX trademark?
The most recent filings under the SILFEX mark are registered to Lam Research Corporation. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is SILFEX expanding into new categories?
The current WikiTrademarks Expansion Score for SILFEX is 34 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 SILFEX trademark filings?
Click the Watch Brand button at the top of this page to add SILFEX 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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