What “rolapitant patent spiro” likely refers to
“Rolapitant” is an antiemetic drug developed for prevention of chemotherapy-induced nausea and vomiting. If you’re searching “rolapitant patent spiro,” you’re likely looking for a patent that covers a “spiro” (spirocyclic) chemical structure as part of rolapitant or a related compound in the rolapitant family.
Which rolapitant patents mention spiro structures
Rolapitant chemistry patents typically describe specific chemical scaffolds (including ring systems such as spirocycles), their synthesis, and compositions of matter. To identify the exact “spiro” rolapitant patent you mean, I need at least one of the following:
- a patent number (e.g., WO…, EP…, US…)
- the applicant/assignee name (company)
- the country or jurisdiction (WO vs US vs EP)
- the exact wording you saw (“spiro…,” “spiro[...],” etc.)
- a link or screenshot of the search result
Without that, I can’t reliably match “spiro” to a specific patent text.
How to find the exact “spiro” patent yourself (fast)
If you’re using a patent database search, try combining:
- “rolapitant” AND “spiro”
- “rolapitant” AND “spirocycle”
- “rolapitant” AND the term pattern you saw (for example, “spiro[”)
Then filter results by:
- document type: “patent” / “WO”
- assignee: the developer or current rights holder
- jurisdiction: US/EP/WO (whichever matches your goal)
When does rolapitant patent protection expire (and why “spiro” matters)
Patent expiry depends on the specific patent family and jurisdiction, not the drug name alone. A “spiro” patent might be:
- an early compound (composition-of-matter) patent covering the chemical structure, or
- a later patent covering a particular derivative, formulation, or synthesis route.
The expiry date and any exclusivity also depend on:
- filing date / priority date in that jurisdiction
- whether patents were granted and remain in force
- any patent term adjustments or extensions (varies by country)
What I need from you to answer precisely
Send any one item below, and I’ll pin down the exact “rolapitant spiro” patent and summarize what it covers:
- the patent number or a link
- the assignee name + jurisdiction
- the specific “spiro” string you saw in the claims (e.g., the “spiro[... ]” segment)
- where you encountered the term (Google Patents, Espacenet, a filing PDF, etc.)
Sources
None provided in the prompt.