What is the “glyburide cyclohexyl isocyanate” patent referring to?
Search results for “glyburide cyclohexyl isocyanate patent” typically point to older patent documents where glyburide is chemically modified or used in formulations involving cyclohexyl isocyanate. In patent practice, cyclohexyl isocyanate often appears as a reagent used to introduce functional groups (for example, to form a derivative), but the exact role depends on the specific patent claim language.
How do I find the right patent (and not a similar name)?
Because “glyburide cyclohexyl isocyanate” is not a standard drug name, the most reliable way to identify the correct patent is to search by chemical terms and aliases used in patent text. Common search tactics include:
- Searching for “glyburide” and “cyclohexyl isocyanate” together.
- Searching within claims or examples for “isocyanate” or “cyclohexyl isocyanate.”
- Searching for glyburide synonyms (spelling variants like “glyburi de” are rare in patents, but docketed OCR text can vary) and the derivative’s name if one is provided.
What kind of patents would involve cyclohexyl isocyanate with glyburide?
Patents involving a drug plus an isocyanate reagent usually fall into one of these buckets:
- A patent claiming a specific chemical derivative or intermediate made using cyclohexyl isocyanate.
- A patent covering a formulation, where a reactive component (isocyanate) is used to bind drug to a polymer or carrier in a controlled-release material.
- A patent focused on a synthesis route (process claims), where cyclohexyl isocyanate is part of the manufacturing chemistry.
Which bucket applies depends on whether cyclohexyl isocyanate appears as a reagent in a manufacturing example or is tied directly to the final claimed compound or composition.
When would a glyburide-related patent expire?
If you’re asking about exclusivity timing, it depends on:
- The jurisdiction (US vs EP vs other).
- The filing date of the specific patent document you mean (not glyburide generally).
- Whether there are patent term adjustments, extensions, or separate formulation/derivative patents.
Glyburide itself is an older medicine, so many brand-related exclusivities are long expired, but derivative- or process-specific patents can have different timelines.
Are there enforcement or litigation risks around this specific patent?
Enforcement risk can only be assessed by locating the exact patent number and looking for:
- Listed assignees/owners.
- Whether it is cited by generic or biosimilar applicants (where relevant).
- Any court filings tied to that patent family.
Without the patent number (or at least the assignee and publication year), there’s no reliable way to say what litigation, if any, is tied to “glyburide cyclohexyl isocyanate.”
What I need from you to give a precise answer
To answer with the actual patent details (number, claims, assignee, filing/publication dates, and what it covers), send one of the following:
- The patent number (e.g., USxxxxxxx, EPxxxxxxx), or
- A link, or
- The assignee/company name plus approximate year, or
- The exact wording you saw (a claim snippet or the product/compound name that includes cyclohexyl isocyanate).
Sources
No sources were provided with the question, so I can’t cite the specific patent document yet.