A party may call as a witness at trial an expert not previously designated by that party if either of the following conditions is satisfied:

(a) That expert has been designated by another party and has thereafter been deposed under Article 3 (commencing with Section 2034.410).

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Terms Used In California Code of Civil Procedure 2034.310

  • Impeachment: (1) The process of calling something into question, as in "impeaching the testimony of a witness." (2) The constitutional process whereby the House of Representatives may "impeach" (accuse of misconduct) high officers of the federal government for trial in the Senate.
  • Testimony: Evidence presented orally by witnesses during trials or before grand juries.
  • Trial: A hearing that takes place when the defendant pleads "not guilty" and witnesses are required to come to court to give evidence.

(b) That expert is called as a witness to impeach the testimony of an expert witness offered by any other party at the trial. This impeachment may include testimony to the falsity or nonexistence of any fact used as the foundation for any opinion by any other party’s expert witness, but may not include testimony that contradicts the opinion.

(Added by Stats. 2004, Ch. 182, Sec. 23. Effective January 1, 2005. Operative July 1, 2005, by Sec. 64 of Ch. 182.)

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