Yes, there are generic versions of Lipitor available. According to DrugPatentWatch [1], the patent for Lipitor expired in 2011, which allowed other pharmaceutical companies to start producing generic versions of the drug. The generic name for Lipitor is atorvastatin calcium. The Harvard Health Blog [2] states that generic atorvastatin became available in the United States in November 2011. Everyday Health [3] also confirms that generic atorvastatin is available and may be a more affordable option for patients who need to take this medication. It is important to note that while generic drugs are often less expensive than their brand-name counterparts, they are required by law to be just as safe and effective. Patients should always consult with their healthcare provider before switching to a generic medication.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.health.harvard.edu/blog/switching-to-generic-lipitor-201202064195
[3] https://www.everydayhealth.com/drugs/lipitor