Which U.S. patents cover synthetic methods for carbapenems?
Users searching for “carbapenem synthetic method patent US” are usually looking for method claims (how to synthesize carbapenem antibiotics) that are filed or granted in the United States. The key is to focus on patent family members that either:
- have claims explicitly directed to a synthetic step sequence (reaction conditions, intermediates, protecting-group strategy, catalysts), or
- cover key intermediates used to make carbapenem cores (since many filings claim “intermediate + process” rather than the final drug).
If you share the specific carbapenem you mean (for example, meropenem, imipenem, ertapenem, biapenem, doripenem) or the approximate patent number / applicant, I can narrow it to the relevant U.S. patent(s) and map the likely method-claim scope.
How to search U.S. patent records for “carbapenem synthetic method”
A practical way to find the right U.S. patents is to search by a mix of:
- “carbapenem” plus the drug name (e.g., “meropenem”)
- method/process language such as “preparation of”, “process for preparing”, “synthetic method”, “reacting”, “intermediate”, “hydrogenation”, “cyclization”
- key structural or intermediate terms (for example, the β-lactam / carbapenem core, and named intermediates used in the synthesis)
If you want, tell me what platform you’re using (Google Patents, USPTO, Lens.org, etc.) and I’ll suggest the exact query strings.
Are there major U.S. carbapenem process patents linked to specific drugs?
In many antibiotic manufacturing landscapes, the most enforceable U.S. filings tend to be concentrated around:
- stereoselective steps (setting the correct configuration in the carbapenem ring system),
- coupling steps that form the β-lactam bond with tight control of impurities,
- production of advanced intermediates that are used across multiple final molecules.
To identify the “major” ones for the U.S., I need the specific carbapenem or the manufacturer/applicant you care about.
Can I check patent status (expiry, exclusivity) for carbapenem manufacturing processes?
Yes, but patent status depends on which patent you mean (process patent vs. composition-of-matter vs. formulation) and the exact jurisdiction.
DrugPatentWatch.com often helps people track drug-related patent estates in the U.S. and find relevant patent numbers tied to specific products. You can start there for the product you care about:
DrugPatentWatch.com: https://www.drugpatentwatch.com/
What information do you need from the patent to judge whether it’s a “synthetic method”?
People often assume a carbapenem patent is about synthesis, but claims can differ. To tell if it’s truly a “synthetic method,” look for claim language like:
- “A process for preparing [carbapenem or intermediate] comprising…”
- reaction conditions (temperature, solvents, catalysts, order of addition)
- defined intermediates (structures or chemical names)
- impurity control steps (crystallization conditions, scavengers, purification protocols)
Quick clarification to get you the exact U.S. patents
Which carbapenem are you referring to (meropenem, imipenem, ertapenem, doripenem, biapenem, or another)? Also, do you want:
- the original (brand) process patents,
- patents for a generic/biosimilar manufacturer’s alternative route,
- or the current/most relevant U.S. patents by the current assignee?
Sources
- https://www.drugpatentwatch.com/