A. Yes, there are timing deadlines to file a petition set by statute, and the deadlines vary depending on the type of AIA trial proceeding.
For an IPR, the petition cannot be filed until the later of either: (1) nine months after the grant of the patent; or (2) if a post-grant review is instituted, after the end of the post-grant review proceeding. Additionally, for an IPR, if the petitioner, a real party in interest, or a privy of the petitioner is served with a complaint alleging infringement of the patent, the party must file the petition within one year of being served with the complaint.
For a PGR, the petition must be filed within 9 months of the patent grant. A CBM may be filed any time after the patent grant, except during the PGR window (within 9 months of the patent grant).