1.958—Petition to revive inter partes reexamination prosecution terminated for lack of patent owner response.

(a) If a response by the patent owner is not timely filed in the Office, the delay in filing such response may be excused if it is shown to the satisfaction of the Director that the delay was unavoidable. A grantable petition to accept an unavoidably delayed response must be filed in compliance with § 1.137(a).

(b) Any response by the patent owner not timely filed in the Office may be accepted if the delay was unintentional. A grantable petition to accept an unintentionally delayed response must be filed in compliance with § 1.137(b).

CFR

1.958—Petition to revive inter partes reexamination prosecution terminated for lack of patent owner response.