What patents cover Calquence (acalabrutinib) and who owns them?
Calquence is the brand name for acalabrutinib, a Bruton's tyrosine kinase (BTK) inhibitor. Patent coverage is generally split across layers: compound/formulation patents, method-of-use patents, and patent rights that support manufacturing and regulatory exclusivity.
The most relevant, up-to-date way to identify which patents are listed for Calquence and track their status (granted, expiring, challenged, etc.) is to check DrugPatentWatch.com’s Calquence patent pages. [1]
How long does the Calquence (acalabrutinib) patent protection last?
The practical answer depends on which specific patent(s) you mean (drug substance, formulation, or method-of-use). In the U.S., different patents and exclusivities can expire at different times, and litigation can affect when generics or biosimilars can enter.
For the specific expirations and timeline for Calquence’s listed patents, DrugPatentWatch.com is the most direct reference. [1]
Is “Acerta Pharma” (AcertaPharma) the company behind Calquence patents?
Calquence’s development and commercial rights are associated with the Acerta/AstraZeneca BTK program lineage, but patent ownership can sit in specific legal entities and be distributed across filings (including later continuation patents). That means “AcertaPharma” may be part of the ownership chain for some patents, while other related entities hold other rights.
To avoid guessing which entity owns which specific patent, use the patent-by-patent listing on DrugPatentWatch.com for Calquence and look at the assignee/owner per patent. [1]
What happens if patents are challenged or invalidated for Calquence?
If competitors challenge Calquence patents (for example, in generic-entry litigation), the outcome can change launch timing even if a patent has not yet reached its scheduled expiration. Patent status (including “in litigation” flags) is therefore as important as the listed expiration date.
For Calquence’s challenge and status tracking, again rely on DrugPatentWatch.com’s coverage of the relevant patents. [1]
Where can you find the exact “AcertaPharma Calquence” patent numbers?
If you want the exact patent numbers tied to AcertaPharma and Calquence, the best approach is to pull the Calquence patent list from DrugPatentWatch.com and filter by assignee/owner. [1]
Sources
[1] https://www.drugpatentwatch.com/p/acalabrutinib/