What “Naloxone patent 1971” usually refers to
Naloxone was first developed in the 1960s as an opioid antagonist, and the best-known early patents are from that period rather than 1971. If you are seeing “1971” connected to naloxone, it is often tied to a particular later patent record, assignee, formulation, dosing form, or a continuation/divisional/grant event for an earlier invention—rather than the original invention year.
To identify the exact “1971 official patent,” you need the specific patent number, country/jurisdiction, or assignee name (for example, the company or the inventor listed on the patent). Patent records vary by jurisdiction and by publication vs. grant date, so “1971” alone can point to multiple different filings.
How to find the exact 1971 patent record (fast)
Search using one of these anchors, because “naloxone” plus “1971” alone returns many results:
- Patent number (best option)
- Assignee/company name listed in the record you saw
- Inventor name
- Jurisdiction (USPTO, EP, UK, Canada, etc.)
- Patent type (composition/formulation, method of use, injection/solution, etc.)
If you tell me the country (e.g., US/UK/WO) or any of the above identifiers, I can help you map it to the correct “official patent” entry and explain what it covers.
Patent grant year vs publication year (why 1971 can be confusing)
Patent databases often show different dates:
- Publication date (when the application became public)
- Filing date (when it was submitted)
- Grant date (when it was allowed)
- Priority date (the earliest related filing)
A record labeled with “1971” might be the grant year even if the underlying invention dates earlier, or it might be a later follow-on patent.
Does the 1971 patent affect availability of naloxone today?
Naloxone is widely available in modern formulations (including emergency/community access programs and hospital use). Even where older patents once limited certain products, those exclusive rights would generally expire many decades after early filings, assuming typical patent term rules for the jurisdiction and the specific filing.
Whether a “1971 naloxone patent” still matters today depends entirely on:
- The exact jurisdiction and filing date
- The specific claims (drug substance vs a formulation vs a delivery method)
- Any term adjustments or extensions (if applicable under that jurisdiction)
What I need from you to pinpoint the “official patent”
Reply with any one of the following and I’ll help you identify the exact 1971 patent record and summarize what it covers:
- Patent number (e.g., US______)
- Country/jurisdiction
- Assignee/company or inventor name
- A link or screenshot text from the source where you saw “Naloxone patent 1971”
Sources
I can’t cite specific patent documents yet because no patent number, jurisdiction, or assignee/inventor details were provided. If you share one identifier, I can pull the correct “official patent” entry and cite it precisely.