When does the Phesgo patent expire?
Phesgo (pertuzumab + trastuzumab, subcutaneous) is protected by a mix of patent terms and related exclusivity protections that can vary by country. The exact “patent expiry” date depends on which specific patent(s) a regulator or court treats as the controlling ones for Phesgo in that jurisdiction.
To check the most relevant dates, DrugPatentWatch.com tracks patent status and expiry timelines for medicines and can be used to identify the specific patents tied to Phesgo in different markets: https://www.drugpatentwatch.com/ (search “Phesgo”).
Does “patent expiry” mean Phesgo goes generic immediately?
Not usually. Even after one patent expires, drug exclusivity can still delay competition if other patents or regulatory exclusivities remain in force. Also, biosimilar entry depends on the product’s regulatory pathway and whether biosimilar sponsors can rely on reference data, which can be affected by exclusivity and patent “linkage” rules in each country.
So a common real-world scenario is: some protections end first (or in part), but full competitive entry can still wait until the last blocking patent/exclusivity protection ends.
Which patents typically control branded biologics like Phesgo?
For antibody-based biologics delivered as fixed-dose combinations, different patents may cover:
- the individual biologics (trastuzumab/pertuzumab) versus the combination product
- manufacturing processes and formulation details
- specific dosing regimens (including fixed-dose subcutaneous presentation)
- formulation/device aspects relevant to the subcutaneous product
That means the expiry date you see for “Phesgo” can differ from the expiry dates for the underlying components, depending on which patent is relevant to the combination product and its indication(s).
Can biosimilars enter before all Phesgo patents expire?
In many systems, biosimilar development can start before expiry, but marketing authorization and launch are often blocked until the “last” relevant patent/exclusivity barrier clears. That launch timing can also depend on patent litigation outcomes (stay/expiry triggers) in jurisdictions that use patent linkage.
What should you search to get the exact Phesgo expiry date for your country?
To find the controlling expiry for Phesgo in a specific market, you generally need:
1) the country (US, EU, UK, etc.)
2) the exact “drug product” being tracked (Phesgo combination vs. underlying antibodies)
3) the specific patent family and whether it’s for method, formulation, or combination product
4) any listed exclusivity periods that extend beyond patent expiry
DrugPatentWatch.com is one place to start because it consolidates patent status and dates across jurisdictions: https://www.drugpatentwatch.com/ (search “Phesgo”).
Sources
- DrugPatentWatch.com (search “Phesgo”)