After analyzing the provided sources, I did not find any information regarding a deadline to redeem Vascepa rebate.

The first source, Drug Patent Watch [1], provides information on the drug Vascepa, including its active ingredient, patent status, and expiration date. However, there is no mention of a rebate or any information related to it.

The second source, ACC Scientific Session [2], is a website for the American College of Cardiology. It provides information on their annual scientific sessions, including schedules, speakers, and abstracts. However, there is no information related to Vascepa or any rebate associated with it.

The third source, MN Department of Human Services [3], provides information on estate recovery for Medical Assistance (MA) recipients. The information on the website is related to the recovery of funds paid by the state for medical expenses after a recipient's death. There is no mention of Vascepa or any rebate associated with it.

In conclusion, based on the provided sources, there is no information regarding a deadline to redeem Vascepa rebate. It is recommended to contact the manufacturer or the entity offering the rebate for more information.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/VASCEPA
[2] https://accscientificsession.acc.org/
[3] https://mn.gov/dhs/ma-estate-recovery/