Inter Partes Review (IPR) is one type of post-grant proceeding available to challenge the claims of U.S. patents. Inter Partes Review is available for all patents during enforceability, regardless of priority date.
Those seeking to challenge the validity of a patent outside the courtroom have extended options, including the newly established Post-Grant Review, a counterpart to Inter Partes Review.
According to the AIA, a Covered Business Method patent involves a method or corresponding apparatus for performing data processing or other operations used in the practice, administration, or management of a financial product or service.
Notwithstanding the new post-grant options established by the America Invents Act (AIA), Ex Parte Reexamination remains intact– allowing a patent owner or third party to obtain another examination of an already-granted patent.