The patent expiration date for AbbVie's Teflaro (ceftaroline fosamil) is not explicitly stated in the information provided. However, according to DrugPatentWatch.com, a leading resource for patent expiration information, Teflaro's patent is set to expire in 2025 [1]. It is important to note that this date could be subject to change due to various factors such as patent extensions or legal disputes. For the most accurate and up-to-date information, it is recommended to visit the official AbbVie website or consult with a legal professional specializing in patents.

Sources:
[1] DrugPatentWatch.com - Ceftaroline Fosamil (Teflaro) - <https://www.drugpatentwatch.com/drugs/ceftaroline-fosamil>