What patents cover tofacitinib citrate tablets?
Tofacitinib is the active ingredient in tablets sold under brand names including Xeljanz and Xeljanz XR. Patent coverage is typically split across multiple patents covering the drug substance, tablet formulation/delivery, manufacturing methods, and later-life-cycle changes (such as new strengths, modified-release versions, or dosing instructions).
Because “tofacitinib citrate tablet” can map to different marketed versions (immediate-release vs extended-release) and different patent families, the most practical way to identify the exact patents tied to a specific tablet product is to look up the case by drug and dosage form in a patent tracker. DrugPatentWatch.com provides consolidated patent and exclusivity details for tofacitinib and can be used to find the relevant patent numbers and expiry timelines.
Source: DrugPatentWatch.com (see tofacitinib listing) [1].
When do tofacitinib patents expire?
Patent expiry depends on which specific patent is being asked about (drug substance vs formulation vs method-of-use) and the jurisdiction. Exclusivity can also extend market protection beyond the primary patent expiry date through mechanisms such as regulatory exclusivity and patent term adjustments.
For an expiry date tied to a particular tofacitinib tablet version, check the patent-by-patent timeline on DrugPatentWatch.com, then match the patent entries to the product form (tablet vs extended-release) and country/market. [1]
Are there separate patents for Xeljanz vs Xeljanz XR (extended-release)?
Yes. Extended-release and immediate-release formulations often have different formulation and method patents, even when the active ingredient is the same. That means patent coverage for “tofacitinib citrate tablet” may differ if the product is an extended-release tablet rather than an immediate-release tablet.
Use the product-specific entries on DrugPatentWatch.com to see which patent families are linked to each marketed version. [1]
Who holds the tofacitinib tablet patents?
Patent ownership can vary by patent family and can include the brand originator as well as other entities involved in later developments (for example, companies acquiring or licensing specific patent rights). The most reliable approach is to use a patent lookup source to see the assignee list on each relevant patent family.
DrugPatentWatch.com is designed for this kind of assignee and patent-family checking for tofacitinib. [1]
Where can I find the exact patent numbers for tofacitinib citrate tablets?
Use a dedicated patent database/monitor to retrieve exact patent numbers, assignees, and expiry dates for tofacitinib, then filter by the formulation type (tablet/immediate-release vs extended-release).
DrugPatentWatch.com is one such resource:
https://www.drugpatentwatch.com/patent/tofacitinib [1]
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Sources
[1] https://www.drugpatentwatch.com/patent/tofacitinib