(b) Final Invalidity Contentions

(1) Not later than twenty-one (21) days after service of the Final Infringement Contentions, each accused infringer must serve on all parties its "Final Invalidity Contentions," which must include that party's final statement of all contentions required by SPR 5.1(c). The party may not assert at trial any invalidity contentions not set out in its Final Invalidity Contentions;

(2) To the extent the Final Invalidity Contentions identify additional prior art, such amendment must be supported by good cause (e.g., discovery of previously unavailable information) and the accused infringer must include a separate statement providing the specific grounds establishing such good cause. The party asserting infringement may move to exclude such amendment on the ground that good cause does not exist. Such motion must be filed within fourteen (14) days after service of the Final Invalidity Contentions. If such motion is not filed (or if filed not granted), the amendment will be effective.