Has the patent for nicardipine's ready to use version expired?

What’s the status of the ready‑to‑use nicardipine patent?
I don’t have a record of a specific patent that covers the ready‑to‑use formulation of nicardipine, and I cannot confirm whether it has expired.

Where to look for the expiration date
The most reliable source is the United States Patent and Trademark Office (USPTO) database or the European Patent Office (EPO) database. Search for the drug name and formulation (e.g., “nicardipine IV ready‑to‑use”) to locate the patent number, filing date, and term. You can also check the FDA’s Orange Book for therapeutic equivalence information, which sometimes lists patent status for approved drugs.

What happens if the patent has expired
If the patent has expired, a generic manufacturer may be able to submit an Abbreviated New Drug Application (ANDA) for a comparable product. The FDA would review the generic’s bioequivalence and labeling before approval.

Are there generic or biosimilar options now
At present, no generic version of a ready‑to‑use nicardipine IV is listed on the FDA’s generic drug database. However, the availability of generics depends on patent status, regulatory approvals, and market conditions.

Why the lack of information matters
Without a clear patent expiration date, healthcare providers and payers cannot determine whether a cheaper generic is legally permissible or likely to enter the market. Checking the primary patent repositories remains the best way to get an up‑to‑date answer.