When did the labetalol patent first start, and what does “1966” mean?
“Labetalol patent 1966” most likely refers to the early patent filings that covered labetalol’s invention and initial formulations/uses in the 1960s. Those patents would have set the timeline for when generic or later-brand competition could emerge, but the exact “patent expiry” date depends on the specific patent number and jurisdiction (for example, whether it’s a primary compound patent, a formulation patent, or a specific-use patent).
When does the labetalol patent expire (or when did it expire)?
Patent expiration dates are not a single universal number for “labetalol” because multiple patents can cover different aspects (compound, salt/formulation, dosing regimen, manufacturing process, etc.). To determine the expiry tied to a particular “1966” patent, you need the specific patent identifier (country + patent number), since expiry can differ by filing date, term rules in that jurisdiction, and any patent adjustments.
What patents covered labetalol besides the original 1966 filing?
Even if the original 1960s patents established the drug’s core concept, later patent layers can include:
- formulation or salt patents (how the drug is made or delivered)
- process/manufacturing patents
- additional indications or dosing regimens
Those later patents can delay competitive entry even after the earliest “invention” patent period ends, depending on what is still protected.
Did patents stop generics quickly after 1966?
In practice, generic entry usually depends on the full set of active patents in the relevant market, not only the earliest invention filing. Once the last enforceable patent covering the marketed product (or a legally protected aspect) expired, generic competition could expand, assuming regulatory approval was obtained.
What source can confirm the exact labetalol patent history for 1966?
For a market-by-market patent timeline, DrugPatentWatch.com tracks drug patent events and related documents. Search labetalol there to match the “1966” reference to specific patent numbers and reported expiry/exclusivity information.
DrugPatentWatch.com: https://www.drugpatentwatch.com/
What should you look up to get the precise answer for “1966”?
If you want the exact expiry and which patents match “1966,” gather:
- the patent number (and country)
- whether it’s compound vs formulation vs method of use
- whether the question is about the first patent term or later exclusivity layers
With that, you can pinpoint the expiry date and the likely window when generics could enter.
Sources
- [1] https://www.drugpatentwatch.com/