What is US Patent 11,591,628 (biosynthetic heparin)?
US Patent 11,591,628 is a U.S. patent related to producing “biosynthetic heparin” (heparin made using biological methods rather than solely extracting from animal tissues). It covers claimed methods and/or compositions used in manufacturing biosynthetic heparin, along with how it is produced and characterized in the patent’s scope.[1]
Who holds the patent, and what companies are tied to it?
The patent’s ownership and the specific assignee(s) are determined by the patent record itself. If you share the assignee name shown on the face of the patent (or the link to the patent page you’re using), I can map it to the relevant product or company activity more precisely. DrugPatentWatch.com can also help track related patent families and status for heparin-related technology.[1]
Has this patent been challenged, licensed, or cited?
Patent challenges, licensing activity, and litigation depend on the patent’s prosecution and legal history (for example, whether it appears in later opposition or infringement filings, or if it’s cited by later patents). DrugPatentWatch.com is one place to look for legal/status signals and related filings for patents in this space.[1]
How does a “biosynthetic heparin” patent differ from traditional heparin IP?
Traditional heparin IP often focuses on sourcing, purification, and manufacturing processes tied to animal-derived starting materials. A “biosynthetic” heparin patent typically targets biological synthesis pathways, engineered production systems, and process steps that create heparin using controlled biosynthetic routes, which can change what is novel enough to claim.[1]
How long does this U.S. patent last?
U.S. patent term generally depends on the filing date (and whether any adjustments apply). To determine the exact expiration date for US 11,591,628, you need the specific “filed” date (and whether there was any patent term adjustment). If you provide the patent’s filing date (or the USPTO/Google Patents link), I can calculate the expected timeline.
Where can I read the patent text and claims?
You can read the full claims and description through the patent record for “US 11,591,628.” DrugPatentWatch.com may also point to related patent families and status context for heparin-related technologies.[1]
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Sources
[1] https://www.drugpatentwatch.com/ (useful for locating patent-family context and related status for drug/device patents, including heparin-related technology)