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Nature of Suit Code: 830
Nature of Suit: Patent
Cause of Action: 35:271 Patent Infringement

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Case Nos. 5:12-cv-05826-PSG

ORDER GRANTING-IN-PART MOTION TO STRIKE PORTIONS OF REIHER EXPERT 

REPORT

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United States District Court

For the Northern District of California

UNITED STATES DISTRICT COURT

NORTHERN DISTRICT OF CALIFORNIA 

SAN JOSE DIVISION

GOOD TECHNOLOGY CORPORATION and 

GOOD TECHNOLOGY SOFTWARE, INC., 

 Plaintiffs, 

 v. 

MOBILEIRON, INC., 

 Defendant. 

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Case No. 5:12-cv-05826-PSG

ORDER GRANTING-IN-PART 

MOTION TO STRIKE PORTIONS OF 

REIHER EXPERT REPORT

(Re: Docket No. 260) 

Plaintiffs Good Technology Corporation and Good Technology Software, Inc. move to 

strike portions of Defendant MobileIron, Inc.’s expert report of Peter Reiher. Upon extended 

review of the parties’ papers and consideration of last month’s oral arguments, the motion is

GRANTED but only IN PART. 

There are two key issues to consider: was the portion of the expert report previously 

disclosed, and if not, was the non-disclosure substantially justified and harmless? Courts in this 

district consider five factors to determine whether a non-disclosure was substantially justified or 

harmless: “(1) the surprise to the party against whom the evidence would be offered; (2) the ability 

of that party to cure the surprise; (3) the extent to which allowing the evidence would disrupt the 

Case 5:12-cv-05826-PSG Document 432 Filed 07/01/15 Page 1 of 3
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Case Nos. 5:12-cv-05826-PSG

ORDER GRANTING-IN-PART MOTION TO STRIKE PORTIONS OF REIHER EXPERT 

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United States District Court

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trial; (4) the importance of the evidence; and (5) the non-disclosing party’s explanation for it[s] 

failure to disclose the evidence.”1

The Patent Local Rules “require that parties lay out their infringement and validity 

contentions early enough to give their opponents a fair shot at rebuttal.”2 The rules are “designed 

to require parties to crystalize theories of the case early in the litigation and to adhere to those 

theories once they have been disclosed.”3 Expert reports in patent litigation “are expected to 

provide more information than is contained” in a party’s infringement contentions.4 “Contentions 

need not disclose specific evidence, whereas expert reports must include a complete statement of 

the expert’s opinions, the basis and reasons for them, and any data or other information considered 

when forming them.”5 The primary question at this stage is, “has the expert permissibly specified 

the application of a disclosed theory, or has the expert impermissibly substituted a new theory 

altogether?”6 “Exclusion of evidence is often an appropriate sanction for the failure to comply 

with the Patent Local Rules.”7

The court rules as follows: 

Issue Ruling

Reiher Report ¶ 89 DENIED

Reiher Report ¶ 90 DENIED

 

1 Guzik Tech. Enters. v. Western Digital Corp., Case No. 11-cv-03786, 2013 U.S. Dist. LEXIS 

164727, at *15 (N.D. Cal. Nov. 18, 2013) (citing San Francisco Baykeeper v. W. Bay Sanitary 

Dist., 791 F. Supp. 2d 719, 733 (N.D. Cal. 2011)). 

2 Apple Inc. v. Samsung Elecs. Co., Ltd., Case No. 12-cv-00630, 2014 WL 173409, at *1 (N.D. Cal. 

Jan. 9, 2014). 

3 Id.

4 Digital Reg of Texas, LLC v. Adobe Sys. Inc., Case No. 12-cv-01971, 2014 U.S. Dist. LEXIS 

58113, at *17 (N.D. Cal. Apr. 24, 2014). 

5 Apple Inc. v Samsung Elecs. Co., Ltd., 2014 WL 173409, at *1. 

6 Id. 

7 O2 Micro Int’l, Ltd. v. Monolithic Power Sys., 467 F.3d 1355, 1369 (Fed. Cir. 2006). 

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