There is no specific recommended tapering schedule for Lipitor (atorvastatin) available in the sources provided. However, it is generally recommended to gradually reduce the dosage of the medication over a period of time to minimize the risk of adverse effects associated with abrupt discontinuation. According to MyMed, discontinuation of Lipitor should be done under the guidance of a healthcare professional, and patients should not stop taking the medication without consulting their doctor. The article also notes that some patients may experience withdrawal symptoms when stopping Lipitor, such as muscle pain and weakness, which may require medical attention. The PubMed article discusses a case report of a patient who experienced muscle pain and weakness after discontinuing atorvastatin abruptly, and suggests that gradual tapering may be beneficial in preventing such symptoms. However, the article notes that more research is needed to establish the optimal tapering schedule for atorvastatin and other statins. The Drug Patent Watch website provides information on the expiration date of the Lipitor patent and other related patents, but does not provide information on tapering schedules or discontinuation of the medication.

Sources:
[1] https://www.mymed.com/medication/atorvastatin-lipitor/discontinuation-and-withdrawal-of-atorvastatin-lipitor
[2] https://pubmed.ncbi.nlm.nih.gov/23428346/
[3] https://www.drugpatentwatch.com/p/tradename/LIPITOR