The America Invents Act (AIA) allows a petitioner to request joinder of an inter partes review (IPR) of a patent with an IPR proceeding previously instituted with respect to that patent so long as the request for joinder is filed “no later than one month after the institution date of any inter partes review for which joinder is requested.” 37 C.F.R. 42.122(b). The joinder provision (35 U.S.C. 315(b)) provides:
If the Director institutes an inter partes review, the Director, in his or her discretion, may join as a party to that inter partes review any person who properly files a petition under Section 311 that the Director, after receiving a preliminary response under Section 313 or the expiration of the time for filing such a response, determines warrants the institution of an inter partes review under section 314.
In many cases, a petitioner requesting joinder is the same petitioner who had filed the previously-instituted proceeding. Such requests for joinder are typically made to circumvent the time bar imposed by 35 USC 315(b), which bars the institution of an IPR based on a petition that is “filed more than 1 year after the date on which the petitioner, real party in interest, or privy of the petitioner is served with a complaint alleging infringement of the patent.” This time bar does not, however, apply to a request for joinder.
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