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4-2. Exchange of Preliminary Claim Constructions and Extrinsic Evidence.

(a) Not later than 21 days after the exchange of Proposed Terms and Claim Elements for Construction pursuant to Local Patent R. 4-14-1, the parties shall simultaneously exchange a preliminary proposed construction ("Preliminary Claim Construction") that shall address each claim term, phrase, or clause that the parties have identified for claim construction purposes. Each such Preliminary Claim Construction shall also, for each element which any party contends is governed by 35 U. S. C. § 112(6), specifically identify the asserted function and shall also identify by column: line number and specific description, the structure(s), act(s), or material(s) corresponding to that element.

(b) At the same time the parties exchange their respective Preliminary Claim Constructions, they shall each also provide a preliminary identification of extrinsic evidence, including without limitation, dictionary definitions, citations to learned treatises and prior art, and testimony of fact and expert witnesses they intend to advance in support of their respective claim constructions. The parties shall identify each such item of extrinsic evidence by production number or produce a copy of any such item not previously produced. With respect to any such witness -- fact or expert -- the parties shall also provide a brief description of the substance of that witness' proposed testimony. A party may identify a fact or expert witness within 30 days of the opposing party's identification of a fact or expert witness under this subparagraph 4-2(b) with an accompanying brief description of proposed testimony referenced immediately above. Final expert reports shall accompany the Joint Prehearing Statement described in subparagraph 4-3(b), below.

(c) Within 7 days thereafter, the parties shall meet and confer in good faith to discuss, among other topics, each of the claim elements the parties have identified in their Proposed Terms and Claim Elements for Construction, for the purpose of narrowing the issues and preparing a Joint Claim Construction Chart and Joint Prehearing Statement, as set forth in Local Patent R. 4-3, below.