I'm not a lawyer but reading TEVA's respond:
"U.S. Patent Nos. 9,829,495 and 8,921,348 are the subject of the 30-month stay of approval."
However, new U.S. Patent and any newly issued patents are not the subject of the 30-month stay or as TEVA lawyer wrote:
"Under Corcept’s proposed schedule, consolidation with the new case would delay the resolution of this case until well after the expiration of the 30-month stay—which, in addition to being unnecessary, could lead to preliminary-injunction proceedings."
That's why 30 months is not the max time but if Corcept's proposed schedule is accepted then it will be longer than 30 months.
Please prove me if I'm wrong.