IPR is relatively inexpensive and quick. They must be filed within 9 months and filing costs are borne by the challenger. https://www.uspto.gov/patents-applica

IPR is relatively inexpensive and quick. They must be filed within 9 months and filing costs are borne by the challenger. https://www.uspto.gov/patents-application-process/appealing-patent-decisions/trials/inter-partes-review https://www.uspto.gov/patents-application-process/appealing-... I can't agree that this strictly benefits the challenger. A well funded challenger was going to challenge anyways. This lowers the costs for both sides. I'll have to read up on the EBay case.