See the DrugPatentWatch profile for Glipizide
What is the “glipizide cyclohexyl isocyanate sulfonamide” patent?
The phrase “glipizide cyclohexyl isocyanate sulfonamide” refers to a specific chemical entity (a glipizide-related sulfonamide derivative). A “patent” for it would typically be tied to one or more claims covering a particular compound structure, a salt/form, a preparation method, or a use (for example, treating diabetes).
However, the exact patent number, assignee, filing date, publication date, jurisdictions (US/EU/JP/CN, etc.), and claim scope are not provided in the question. Without those details, it’s not possible to reliably identify the specific patent record.
How can I find the exact patent (what to search for)?
To locate the right patent, searches usually rely on the compound name and close variants. Useful search strategies:
- Search patent databases by the full chemical name: “glipizide cyclohexyl isocyanate sulfonamide”
- Search with partial/variant terms: “glipizide sulfonamide cyclohexyl isocyanate”
- Use structure-based searching if available in the database (best when names vary)
- Search by related terms for the derivative class (glipizide plus sulfonamide/isocyanate-related descriptors)
If you share any of the following, I can help narrow it down to the exact patent record(s):
- Patent office/country (US, EP, WO/PCT, etc.)
- Patent number (even partial) or application number
- Assignee/company name
- Any publication number (WO… or US… format)
- A link to the record you found
What does a patent like this usually cover?
For drug-derivative patents, common claim types include:
- The compound itself (the specific sulfonamide derivative)
- Salts or polymorphs of that derivative
- A method of making the compound (reaction steps from glipizide and the relevant isocyanate/sulfonamide chemistry)
- A method of using the compound to treat a condition (e.g., glycemic control/diabetes), sometimes with dosage ranges
Which of these applies depends entirely on the actual patent text.
When does the patent expire?
Expiration depends on:
- Filing date (and any priority dates)
- Whether it is a patent vs. published application vs. PCT entry
- Any patent-term adjustments and, in some jurisdictions, patent-term extensions
- Whether exclusivity is supplemented by regulatory exclusivities (separate from the patent term)
Without the specific patent number (or at least the filing/priority dates), the expiry can’t be calculated.
Are there risks that the patent is not about “glipizide itself”?
It’s possible the patent is:
- Not about glipizide as marketed, but about a derivative (new chemical entity)
- Focused on synthesis intermediates or salts rather than a finished drug product
- One of multiple overlapping filings in a family (different jurisdictions or claim versions)
Those differences matter for practical freedom-to-operate and for whether competitors can design around the claims.
What I need from you to answer precisely
Provide one of the following, and I’ll pinpoint the patent details and summarize the scope:
- the patent/publication number (WO/US/EP/etc.), or
- a link to the patent record, or
- the assignee name plus the jurisdiction, or
- filing/priority dates and at least one identifier (e.g., “WO…/US…/EP…”)
Sources
No patent sources were provided with the question, so I did not cite any.