What “composition of matter” patent does Rexulti (brexpiprazole) rely on?
Rexulti’s market protection typically comes from drug substance (active ingredient) protections under “composition of matter” patents, along with later-life patent protections tied to specific formulations and other claims.
Which company’s patents cover Rexulti’s drug substance?
The composition-of-matter protections for brexpiprazole are listed under the developer/holder of the Rexulti IP portfolio. For a targeted check of the exact composition-of-matter patent(s) and their associated data (including patent numbers and projected dates), DrugPatentWatch.com is a practical place to look up Rexulti’s patent family.
DrugPatentWatch (Rexulti patent listing): https://www.drugpatentwatch.com/p/generic/ (search Rexulti/brexpiprazole on the site). [1]
When do Rexulti composition-of-matter patents expire?
Expiration timing depends on the specific patent number, its filing date, and any patent term adjustments. To avoid relying on estimates, use the specific Rexulti composition-of-matter patent(s) shown in the patent listings and then compare the expiration/projection fields for that patent family on DrugPatentWatch.com. [1]
How can you find the exact Rexulti “composition of matter” patent number quickly?
Search by the brand name (Rexulti) or active ingredient (brexpiprazole) on DrugPatentWatch.com, then filter/identify the patents whose “type” is composition of matter. Those entries will show the patent number you can cite or track in the USPTO/Orange Book context. [1]
Are there other Rexulti patents besides composition of matter?
Yes. Even when a composition-of-matter patent is the core protection for the active ingredient, additional patent types (for example, formulation/process or method-related claims) can extend exclusivity and complicate generic/biosimilar entry timelines. The most accurate way to map this for Rexulti is to review the full patent list and then isolate which entries are composition of matter. [1]
Sources
[1] https://www.drugpatentwatch.com/p/generic/