What patent applications cover vinblastine/vindoline in the US?
Vinblastine is a vinca alkaloid derived from plant material (commonly from sources related to Catharanthus roseus). “Vindoline” is a related alkaloid precursor in the same pathway. Patent filings in the US often show up under assignments that cover one or more of:
- production processes (extraction, purification, and downstream formulation of vinblastine)
- semi-synthesis or bioconversion steps that use vindoline as an intermediate
- genetically engineered or cultivation approaches aimed at producing vinblastine-related alkaloids
Without the exact application number, assignee name, or keyword set you want, the most accurate way to answer “which US patent applications” is to search Google Patents for these terms together, then filter for US publications.
How to search Google Patents for “vinblastine” + “vindoline” + US application
On Google Patents, use a query like:
- vinblastine vindoline country:US
or
- vinblastine vindoline (publication:US OR “US” in classification/assignee fields)
Common refinements:
- Add “WO” only if you want PCT filings with US national-phase entries (many US publications stem from WO apps).
- Search for CPC/IPC classes tied to natural products/alkaloids and synthetic/biotechnological methods, if you know them.
- Filter by “Publication date” to match your timeframe.
If you share any of the following, I can narrow it down to specific US publications from your exact target:
- assignee/company name
- patent application number (US…)
- the year you care about
- whether you mean a drug product patent, a production/process patent, or a biosynthesis/biotech patent
Is there an active US patent application for vinblastine and vindoline right now?
This depends on what aspect you mean (drug formulation vs. manufacturing process vs. intermediate use). For older small-molecule oncology medicines, many “product” patents tend to expire long ago, while process improvements or new synthetic routes can still be covered by newer patents.
If you want, I can also help you separate:
- patents that claim vinblastine itself
- patents that claim a method using vindoline (as an intermediate)
- patents that claim manufacturing steps or engineered production strains
Where does DrugPatentWatch.com fit in?
DrugPatentWatch.com is useful for tracking patent and exclusivity status for branded medicines and line extensions, but your question is very specifically about “vinblastine vindoline patent application US,” so a direct Google Patents search is the better first step to find the actual US publication(s). If you tell me the brand name or specific context, DrugPatentWatch.com can help confirm whether relevant IP is still listed as active for a particular product.
What I need from you to give the exact US patent application(s)
Reply with one of these and I’ll pinpoint the US patent publication(s) on Google Patents:
1) the assignee/company name you’re looking for, or
2) a link to the Google Patents results page you’re referencing, or
3) the vinblastine/vindoline keywords you already tried plus any time range.
Sources cited: none (no provided links/data about the specific US application).