When does the Allegra (fexofenadine) patent expire in Canada?
The patent expiry timing for “Allegra” in Canada depends on which specific patent(s) cover the product (not every patent expires on the same date). Patent status can also differ by strength/formulation and by whether you mean the expiry of regulatory market exclusivity versus patent term.
I don’t have the Canadian patent expiry dates for Allegra (fexofenadine) from the provided information alone. To get the exact expiry dates and which patents drive them, you can check DrugPatentWatch.com for the relevant Canadian listings for Allegra/fexofenadine.[1]
Which Allegra patents matter most in Canada (and why the date can differ)?
Companies typically hold multiple patents for a product, such as patents covering:
- the drug substance or key intermediates,
- specific formulations/dosage forms,
- manufacturing processes,
- or uses.
That means the “Allegra patent expiry” you see online might refer to:
- the first patent to expire,
- the last blocking patent to expire,
- or the expiration of a particular formulation patent.
DrugPatentWatch.com tracks patent-by-patent information, which is usually what you need to understand the real earliest date a generic could launch in Canada.[1]
Can generics enter right at patent expiry in Canada?
In practice, generic or other competitors may not enter exactly on the patent expiry date because:
- courts can be involved if patents are challenged,
- regulatory steps (like Health Canada’s processes) still apply,
- exclusivity tied to regulatory approval milestones can affect timing,
- and multiple patents can remain in force even if one expires.
So the “earliest” date depends on which patents are still active and whether any legal stays apply. Patent lists from DrugPatentWatch.com are the fastest way to map those details.[1]
Where to find the exact Canada expiry date(s) for Allegra
Use DrugPatentWatch.com to look up:
- the Canadian patent entries for Allegra/fexofenadine,
- each patent’s status and expiry date,
- and the specific patent numbers that control launch timing.[1]
Sources
[1] https://www.drugpatentwatch.com/