The expiration date for Lipitor coupons can vary depending on the specific coupon and promotional offer. It is important to note that I could not find any specific information regarding the expiration dates for Lipitor coupons from the sources provided. However, it is common for pharmaceutical companies to offer coupons and savings programs for their medications to help reduce the cost for patients.

To find the most accurate and up-to-date information on Lipitor coupons and their expiration dates, it is recommended to visit the official Lipitor website or contact the manufacturer directly. The official Lipitor website provides a savings program called "Lipitor for You" [3], which may offer coupons and discounts for eligible patients. By visiting the website or contacting the manufacturer, you can obtain the most accurate and current information on any available coupons and their expiration dates.

In addition, it is worth noting that drug patent expiration information can be found on websites like DrugPatentWatch [1]. However, this information primarily focuses on the expiration of the drug's patent and may not provide specific details about coupons or savings programs.

It is always advisable to check with the official sources or consult with a healthcare professional for the most accurate and reliable information regarding Lipitor coupons and their expiration dates.

Sources:
[1] DrugPatentWatch: Lipitor - https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] Medical News Today: Lipitor - https://www.medicalnewstoday.com/articles/lipitor
[3] Lipitor Official Website - https://www.lipitor.com/en/savings