(a) Opening Claim Construction Brief.  Within thirty-five (35) days after the exchange of terms set forth in LPR 4.1(a), the parties opposing infringement shall file their Opening Claim Construction Brief, which may not exceed twenty-five (25) pages absent prior leave of court. The brief shall identify any intrinsic evidence with citation to the Joint Appendix under LPR 4.2(b) and shall separately identify any extrinsic evidence the party contends supports its proposed claim construction. If a party offers the testimony of a witness to support its claim construction, it must include with its brief a sworn declaration by the witness setting forth the substance of the witness’ proposed testimony, and promptly make the witness available for deposition (if the witness is under the control of the party) concerning the proposed testimony.

(b) Joint Appendix.  On the date for filing the Opening Claim Construction Brief, the parties shall file a Joint Appendix containing the patent(s) in dispute and the prosecution history for each patent. The prosecution history must be paginated, and all parties must cite to the Joint Appendix when referencing the materials it contains. Any party may file a separate appendix to its claim construction brief containing other supporting materials.

(c) Responsive Claim construction Brief.  Within twenty-eight (28) days after filing of the Opening Claim Construction brief, the parties claiming infringement shall file their Responsive Claim Construction Brief, which may not exceed twenty-five (25) pages absent prior leave of Court. The brief shall identify any intrinsic evidence with citation to the Joint Appendix under LPR 4.2(b) and shall separately identify any extrinsic evidence the party contends supports its proposed claim construction. If a party offers the testimony of a witness to support its claim construction, it must include with its brief a sworn declaration by the witness setting forth the substance of the witness’s proposed testimony and promptly make the witness available for deposition (if the witness is under the control of the party) concerning the proposed testimony. If such a deposition occurs,the date for the filing of a Reply Claim Construction brief shall be extended by seven (7) calendar days. The brief shall also describe all objections to any extrinsic evidence identified in the Opening Claim Construction Brief.

(d) Reply Claim Construction Brief.  Within fourteen (14) days after filing of the Responsive Claim Construction Brief, the parties opposing infringement shall file their Reply Claim Construction Brief, which may not exceed fifteen (15) pages absent prior leave of Court. The brief shall describe all objections to any extrinsic evidence identified in the Opening Claim Construction Brief.

(e) The presence of multiple alleged infringers with different products or processes shall, in an appropriate case, constitute good cause for allowing additional pages in the Opening, Responsive, or Reply Claim Construction Briefs or for allowing separate briefing as to different alleged infringers.

(f) Joint Claim Construction Chart.  Within seven (7) days after the date for filing of the Reply Claim Construction Brief, the parties shall file (1) a joint claim construction chart that sets forth each claim term and phrase addressed in the claim construction briefs; each party’s proposed construction, and (2) a joint status report containing the parties’ proposals for the nature and form of the claim construction hearing pursuant to LPR 4.3.

Comment

The committee opted for consecutive claim construction briefs rather than simultaneous briefs, concluding that consecutive briefing is more likely to promote a meaningful exchange regarding the contested points. For the same reason, the committee opted to have the alleged infringer file the opening claim construction brief. Patent holders are more likely to argue for a “plain meaning” construction or for non-construction of disputed terms; alleged infringers tend to be less likely to do so.

The Rules provide for three briefs (opening, response, and reply), not four, due to the likelihood of a claim construction hearing or argument. The Court’s determination not to hold a hearing or argument may constitute a basis to permit a surreply brief by the patent holder. A judge may choose not to require or permit a reply brief.