; and (B) dependent or multiple dependent claims shall be presumed valid even though dependent upon an invalid claim. (3) Burden of establishing invalidity In any proceeding described under paragraph (1) in which the validity of a patent is at issue, the burden of establishing invalidity of a patent or any claim thereof rests on the party asserting the invalidity by clear and convincing evidence. . (b) Tolling patent term during judicial challenge Section 282 of title 35, United States Code, is amended by adding at the end the following: (d) Tolling of patent term during validity challenge In an action involving a patent where the validity of the patent has been challenged, the patent term shall be tolled from the time the validity of the patent is challenged to the time of resolution of the validity issue by the court. The patent term shall resume once the validity challenge is resolved. The court may award damages to the patent owner in a case in which another party brought a validity claim against the patent in bad faith. . 12. Injunction Section 283 of title 35, United States Code, is amended— (1) by striking The and inserting the following: to read as follows: (a) In general The