When was xtampza pattented?

When was Xtampza (extended-release oxycodone) first patented?

Xtampza ER (extended-release oxycodone) received its earliest patent protection in 2011. [1]

Which patent covers Xtampza, and what does “first patented” mean?

When people ask “when was Xtampza patented,” they usually mean the first approval-related patent filing or earliest listed patent tied to the product’s extended-release formulation and associated IP. That earliest date for Xtampza is 2011. [1]

Has Xtampza had later patents too?

Xtampza can have additional follow-on patents covering formulation tweaks, manufacturing methods, or new combinations, even if the earliest patent date is 2011. The specific later-patent dates depend on which patent family you look at. [1]

Sources

[1] https://www.drugs.com/compare/xtampza.html