Se-Kure Controls, Inc. v. Diam USA, Inc., No. 06 C 4857, Slip Op. (N.D. Ill. Jan. 9, 2009) (Cox, Mag. J.).*
Judge Cox denied plaintiff’s motion to exclude defendants’ patent law expert witness, but placed limits on the expert’s testimony following the reasoning of a previous opinion in a related case about the same expert — click here to read about that opinion in the Blog’s archives. The Court held that a patent expert’s testimony could aid the Court’s understanding of Patent Office procedures and of what would have been material to a reasonable patent examiner. But the patent law expert was not allowed to testify as to any legal conclusions. And the testimony would be given outside the jury’s presence to avoid any prejudice. Because the Court decides inequitable conduct, there was no need for the jury to hear the expert’s testimony.
* Click here for more on this case and related cases in the Blog’s archives. Also, note that the Court continues the progressive use of footnote citation.