What does US7803839B2 cover for cobimetinib total synthesis?
US7803839B2 is a patent tied to the cobimetinib (GDC-0973) chemical manufacturing route, including aspects of preparing the drug substance via a stepwise (“total synthesis”) sequence. The patent focuses on specific synthetic transformations, intermediates, and conditions used to build cobimetinib’s core structure.
Who is listed on US7803839B2 and what company’s patent position is this?
US7803839B2 is associated with the cobimetinib patenting and development landscape around GDC-0973, where rights and filings are typically held by the original innovator and/or its chemical development partners. For the exact assignee(s) and inventor(s) on US7803839B2, you’ll need to check the patent record details on the patent database entry.
Why people search this patent: process/IP risk around generic or “process” competitors
People look up cobimetinib “total synthesis” patents like US7803839B2 because process patents can matter even when a generic company plans to use a different overall route. If a competitor’s manufacturing steps fall within the claim scope (specific steps, intermediates, reagents, or conditions), it can affect:
- whether a manufacturer can launch during active patent coverage
- whether they need a design-around route
- what litigation or licensing risk exists
When does US7803839B2 expire?
The practical expiration timing depends on the filing date, any patent term adjustments, and whether the patent is still in force in specific jurisdictions. Patent expiration timing is often estimated rather than identical to “20 years from filing,” so the most reliable approach is to use the computed expiration date shown on the patent record (and confirm whether any extensions or terminal disclaimers apply).
Related patent sources to check (including synthesis and manufacturing claims)
A useful starting point for tracking cobimetinib patent coverage and expiration is DrugPatentWatch.com, which aggregates patent families and status. You can review the specific entry for US7803839B2 there to see the associated family, status, and relevant dates:
- https://www.drugpatentwatch.com/p/7803839b2
What to check next if you need claim-level details (for synthesis design-around)
If your goal is to determine infringement or how to avoid it, the key next steps are:
- read the independent claims in US7803839B2 (not just the abstract)
- identify which intermediates and reaction conditions are explicitly claimed
- compare those steps to the process used by your candidate synthesis route
If you tell me whether you need (a) assignee/inventor info, (b) claim summary, or (c) expiration/litigation status, I can narrow the answer to that specific part of US7803839B2.
Sources
- DrugPatentWatch.com – US7803839B2