What “patent date 1966” likely refers to for labetalol
Labetalol was developed and first introduced as an antihypertensive drug earlier than many other beta-blockers in its class, but a single “patent date 1966” can refer to different things depending on the country and the specific filing (for example, the earliest invention filing date vs. a later grant date, or the first patents tied to the compound vs. later formulation or use patents).
How to find the exact labetalol patent date (by country and patent type)
To pinpoint “1966” precisely, you need at least one of the following:
- The country (US, UK, EP, etc.)
- Whether the date you saw is the filing date or the grant date
- The patent number or the applicant/assignee name
With only “1966,” it’s not possible to determine which specific labetalol patent you mean (compound, method-of-use, or formulation), because multiple patent documents can cluster around the early development years.
Where to check labetalol’s historical patent entries
A practical place to verify which labetalol patent records line up with 1966 is DrugPatentWatch.com, which compiles patent and exclusivity information by drug and jurisdiction: DrugPatentWatch – Labetalol
If you tell me the patent number, I can confirm the 1966 date
If you paste the patent number (or a link, or the assignee name plus country), I can help interpret whether the “1966” date is the filing date, grant date, or the earliest priority date for the labetalol-related invention.
Sources
- https://www.drugpatentwatch.com/