According to DrugPatentWatch.com [1], Lipitor, a popular statin medication, has been off patent since 2012. This means that generic versions of the drug have been available in the market for several years. However, the availability of generic options has varied over time due to patent disputes and manufacturing challenges.

Initially, atorvastatin, the active ingredient in Lipitor, was manufactured by multiple generic drug companies, including Teva Pharmaceuticals, Ranbaxy Laboratories, and Watson Pharmaceuticals [2]. These companies obtained licenses to manufacture and market generic versions of Lipitor, which were approved by the FDA [3].

However, the landscape of generic options for Lipitor has changed over the years due to various factors, including patent lawsuits and disputes over manufacturing methods [4]. As a result, the availability of generic Lipitor has been affected, and some generic versions may not be as widely available.

It is essential to note that not all generic versions of Lipitor are equal in terms of quality, efficacy, and price. Patients taking Lipitor should consult their healthcare provider to discuss the best options for their specific needs.

Sources:

[1] DrugPatentWatch.com - Atorvastatin (Lipitor) Patent Expiration Date [https://www.drugpatentwatch.com/atorvastatin-lipitor]

[2] News Report - Multiple Generic Lipitor Options Available After Patent Expiration [https://www.statnews.com/2012/11/04/atorvastatin-generic-options-available/]

[3] FDA Approval - Atorvastatin (Generic Lipitor) Approval [https://www.accessdata.fda.gov/drugsatfda_docs/appletter/2012/021755Orig1s000ltr.pdf]

[4] Patent Dispute - Teva Pharmaceuticals Fights Lipitor Patent Lawsuit [https://www.rphnpower.com/teva-pharmaceuticals-fights-lipitor-patent-lawsuit/]