Based on the information provided, I cannot provide an exact date for when Lipitor dosage will be increased again. Lipitor, also known as atorvastatin, is a medication used to treat high cholesterol and prevent cardiovascular disease [1]. The dosage of Lipitor is determined by a variety of factors, including the patient's medical history, current medications, and the severity of their condition [1].

It is important to note that Lipitor, like all medications, has a patent that expires, allowing for generic versions of the drug to be produced [2]. The patent for Lipitor expired in 2011 [2], which may impact the availability and cost of the medication. However, it does not directly affect the decision to increase or decrease the dosage of Lipitor.

Any changes to a patient's medication, including an increase in dosage, should be made in consultation with a healthcare provider [1]. They will consider the most up-to-date information and guidelines for the use of Lipitor, as well as the individual patient's needs and response to treatment [1].

In summary, I cannot provide an exact date for when Lipitor dosage will be increased again. The decision to increase or decrease the dosage of Lipitor is made on a case-by-case basis by healthcare providers, taking into account the individual patient's needs and response to treatment.

Sources:

1. Mayo Clinic. (2021). Atorvastatin (Oral Route). Retrieved from <https://www.mayoclinic.org/drugs-supplements/atorvastatin-oral-route/side-effects/drg-20063050>
2. DrugPatentWatch. (2021). Atorvastatin Calcium. Retrieved from <https://www.drugpatentwatch.com/drugs/atorvastatin-calcium>