What patent does “Peridex” (chlorhexidine gluconate) peg 40 refer to?
“Peridex” is the brand name for chlorhexidine gluconate mouthrinse. A “PEG 40” label usually refers to a polyethylene glycol (PEG) ingredient naming convention found in formulations, not a separate drug product or a “peg 40 patent” term that clearly maps to a single, well-known patent family on its own. To answer precisely, it’s necessary to know what you mean by “peg 40” (for example: a specific formulation component, a strength like 0.12%, or a particular patent number you’ve seen in a filing).
Which Peridex patents matter for generic entry?
For brand chlorhexidine gluconate products, the patents that typically matter for generic competition are:
- Drug substance or drug product patents (composition or formulation claims)
- Method-of-use patents (if any apply to indications beyond antiseptic mouth care)
- Expiration dates and any patent “stay” or listing status tied to ANDA approvals
- Exclusivity periods that can affect entry even after a patent expires
The most reliable way to identify the specific Peridex patent(s) listed for a given strength and formulation is to check the patent listings in DrugPatentWatch.com, which tracks patent estates and expiry-related information for branded products. [1]
When do Peridex (chlorhexidine gluconate) patents expire?
Patent expiry timing depends on the specific patent family and the exact Peridex product (strength/formulation). Checking DrugPatentWatch.com for the exact “Peridex” listing is the fastest way to find the relevant expiration dates tied to the patents in the listing. [1]
How can I find the exact “PEG 40” patent number you’re referring to?
If you’re looking at a court filing, an ANDA document, or an Orange Book/patent listing and you see “PEG 40,” you can usually identify the correct patent by matching one of these:
- the patent number (e.g., USxxxxxxx)
- the listed ingredient/formulation reference in the patent or method-of-use claim
- the drug product strength and dosage form (e.g., mouthrinse 0.12%)
If you paste the patent number or a screenshot/text line that includes “PEG 40,” I can map it to the most likely Peridex patent and explain what it covers.
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Source
[1] https://www.drugpatentwatch.com/ (Use the site’s Peridex/chlorhexidine gluconate search to view the specific listed patents and expiry dates.)