See the DrugPatentWatch profile for heparin
Are there heparin biosynthesis patents on Google Patents?
Yes. Google Patents has multiple patent families that cover parts of heparin biosynthesis or pathways related to heparan/heparin glycosaminoglycan construction (for example, enzymes, precursor supply, glycosylation steps, and engineered production). Searches also frequently return patents focused on manufacturing heparin or heparin-like molecules rather than “biosynthesis” in the narrow, one-step sense.
Because “heparin biosynthesis” can be described in several ways, searches on Google Patents often work best using alternate terms such as:
- heparin biosynthesis / heparin pathway
- heparan sulfate biosynthesis
- glycosaminoglycan biosynthesis
- N-deacetylase/N-sulfotransferase (NDST) and other sulfotransferase enzymes
- heparan/heparin biosynthetic enzymes
- chemoenzymatic heparin production (if the documents use a production-process framing)
What kinds of documents show up when you search heparin biosynthesis?
Patent results typically fall into a few clusters:
- Enzymes or enzyme variants used to build heparin/heparan sulfate structures (including sulfation and epimerization steps).
- Microbial or cell-based production approaches that aim to generate heparin or heparin-like products using engineered systems.
- Process patents for producing heparin via multi-step synthesis/biocatalysis (often described as “chemoenzymatic” rather than purely biological).
What exact Google Patents search query should you try?
A practical starting point is to search for a core concept plus one or two pathway terms, then broaden if needed. For example:
- ("heparin" OR "heparan sulfate") AND ("biosynthesis" OR "biosynthetic")
- ("heparan sulfate" OR "heparin") AND (sulfotransferase OR "epimerase" OR "NDST")
- "chemoenzymatic" AND heparin (useful if the patents describe production rather than cellular biosynthesis)
If you tell me whether you mean (1) natural heparin biosynthetic pathways, (2) enzyme/process patents for production, or (3) engineered-cell biosynthesis, I can suggest tighter query terms tailored to that interpretation.
If you meant “heparin drug” patents (not biosynthesis): where to check
If your goal is specifically patents tied to heparin as a drug product (formulations, processes, exclusivity), DrugPatentWatch can be a helpful complementary source for tracking relevant patent activity for specific heparin products. You can use it alongside Google Patents to cross-check assignees and patent numbers: https://drugpatentwatch.com/
Do I need the patent number or assignee to find the right one?
Usually, yes. “Heparin biosynthesis” returns many related but different inventions. If you share any of the following, the search becomes much more precise:
- a company/university name (assignee)
- a researcher name
- whether you want the specific enzyme(s) or engineered organism
- a patent number, publication number, or an approximate filing year