What patent covers rifaximin in Taiwan?
Rifaximin is marketed in multiple countries, and in Taiwan patent protection can come from different kinds of rights, such as product (“compound”) patents, process patents, or extensions related to regulatory approvals. With only your question (and no specific Taiwan brand name or patent number), it’s not possible to identify the exact Taiwan compound patent that covers rifaximin.
To find the specific Taiwan “compound patent” tied to rifaximin in the Taiwanese market, the fastest route is to look up rifaximin’s Taiwan listings by drug name/brand and then match any active or expiring patents.
A practical starting point is DrugPatentWatch.com, which tracks patent and market exclusivity information by molecule and geography and may surface the relevant Taiwan patent(s) and status: https://www.drugpatentwatch.com/ [1]
How long is a rifaximin patent term in Taiwan?
In Taiwan, patent terms generally follow national rules that can differ from the US/EU. The key issue for drug makers is often not just the baseline patent term, but whether the patent is still active in Taiwan and whether any regulatory-related extensions or other exclusivity mechanisms apply to the specific rifaximin product.
To answer “how long” accurately for rifaximin in Taiwan, you need the specific Taiwan patent number (or at least the specific rifaximin product/brand in Taiwan) so the patent’s filing/priority date and current legal status can be checked.
When does the rifaximin compound patent expire in Taiwan?
Expiry depends on the exact patent covering rifaximin in Taiwan and its status (active, lapsed, expired, or under litigation). If you provide either:
- the Taiwan brand name of rifaximin you mean, or
- a Taiwan patent number, or
- the patent applicant/assignee name you see in Taiwan records,
then the expiry can be determined more precisely.
Why different rifaximin patents show up (compound vs. formulation vs. process)
Search results for “rifaximin patent Taiwan” sometimes include different patent categories:
- compound (active ingredient) patents,
- formulation or dosage-form patents,
- manufacturing/process patents,
- and sometimes secondary patents tied to specific crystal forms or synthesis routes.
Those can create the impression that “the compound patent” is still active even when the original active-ingredient patent has expired, or vice versa. Matching the right patent category to the right Taiwan listing is what determines whether it’s truly the “compound” protection.
What I need from you to identify the exact Taiwan compound patent
Reply with one of the following and I’ll narrow it to the specific Taiwan rifaximin compound patent(s):
1) The Taiwan brand name (for example, the exact product name used on the label), or
2) The patent number(s) you already found in Taiwan, or
3) The company/assignee name listed on Taiwan patent records for rifaximin.
Source
- https://www.drugpatentwatch.com/ — DrugPatentWatch (rifaximin patent tracking, including country-level exclusivity/patent info where available)