NALMEFENE HCL holds 2 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 5 (Pharmaceuticals) with 2 filings. The WikiTrademarks Expansion Score is 19/100, low — the brand is focused on defending its existing categories rather than expanding.
USPTO data refreshed July 5, 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 |
|---|---|---|---|---|---|
| 99710822 | NALMEFENE HCL | Mar 18, 2026 | Registered | 005 Pharmaceuticals | Purdue Pharma L.P. |
| 97306650 | NALMEFENE HCL | Mar 10, 2022 | Registered | 005 Pharmaceuticals | Purdue Pharma L.P. |
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FAQ: NALMEFENE HCL trademark portfolio
What trademarks does NALMEFENE HCL hold?
NALMEFENE HCL holds 2 USPTO trademark filings across 0 NICE classes. The largest concentration is in Class 5 (Pharmaceuticals). The most recent filings are registered to Purdue Pharma L.P..
How many trademarks does NALMEFENE HCL have at the USPTO?
WikiTrademarks tracks 2 USPTO trademark filings attributed to NALMEFENE HCL. The brand has been actively filing since March 2022. The count updates daily as new filings are indexed from the USPTO bulk data feed.
In which NICE classes does NALMEFENE HCL file most often?
NALMEFENE HCL's most active class is NICE Class 5 (Pharmaceuticals), with 2 filings. The full distribution across all 0 classes is shown in the Nice Class Distribution panel on this page.
Who owns the NALMEFENE HCL trademark?
The most recent filings under the NALMEFENE HCL mark are registered to Purdue Pharma L.P.. Trademark ownership can shift through assignments — see the Ownership & Assignment History section on this page for the full chain of title.
Is NALMEFENE HCL expanding into new categories?
The current WikiTrademarks Expansion Score for NALMEFENE HCL is 19 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 NALMEFENE HCL trademark filings?
Click the Watch Brand button at the top of this page to add NALMEFENE HCL 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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