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N.D. Cal.Procedural orderFiled July 3, 2025

Kawasaki Jukogyo Kabushiki Kaisha v. Rorze Corporation

Judge
Fitts
Docket
5:22-cv-04947
Court
U.S. District Court · Northern District of California
Pages
12

Counsel22 of record
PLAINTIFF
Crowell & Moring LLPLLP8 attorneys
Eric Moss, James R. Sobieraj, Mark Herbert Remus
INTERESTED PARTY
Eric Alan Krause Venable LLP
Jeannine Yoo Sano Venable LLP
Pan Chih Lee Venable LLP
DEFENDANT
Kutak Rock LLPLLP9 attorneys
John P. Passarelli, Aaron A. Myers, Bradley Paul Boyer
Carol A. Svolos
Chen Yoshimura LLPLLP
Masao Yoshimura

Counsel of record per CourtListener. Firm names are approximate.

EvidenceDiscoveryIntellectual PropertyCivil Procedure
In one sentence

In Kawasaki v. Rorze, Judge Fitts partly granted both sides’ expert-witness motions, limiting testimony and allowing related confidential materials to remain sealed.

Who this affects

Kawasaki Jukogyo Kabushiki Kaisha and Rorze Corporation were affected in their ability to use the challenged expert reports and testimony at later proceedings or trial.

What happened

In Kawasaki Jukogyo Kabushiki Kaisha v. Rorze Corporation, the court considered challenges to two experts’ reports in a patent case. Kawasaki sought to strike parts of Christian Tregillis’s supplemental report, and Rorze sought to exclude testimony from David Haas.

The court granted both motions in part. Tregillis may correct a calculation schedule but may not offer new opinions about hypothetical royalty negotiations. Haas may testify about foreign-sales damages, lost profits, reasonable royalties, and commercial success, but not about damages from before Kawasaki gave Rorze actual notice. The court also granted the related requests to keep confidential business information under seal.

Judge P. Casey Fitts ruled that the challenged issues generally concerned the reliability or scope of expert testimony rather than matters that required excluding the opinions entirely, while finding that Tregillis’s additional negotiation opinions were disclosed too late and that Haas could not support damages before actual notice.

The detailed version

For law students, journalists, and other readers who want the full reasoning

Case
Kawasaki Jukogyo Kabushiki Kaisha v. Rorze Corporation · No. 5:22-cv-04947
Judge
Fitts
Date
July 3, 2025

Background

The order addresses two expert-related motions in a patent case. Kawasaki moved to strike portions of Rorze’s damages expert Christian Tregillis’s supplemental report. Rorze moved to exclude portions of Kawasaki’s damages expert David Haas’s testimony under Federal Rule of Evidence 702, which governs the admissibility of expert testimony. The parties also asked to file material containing Rorze’s confidential business information under seal.

Kawasaki’s Motion to Strike

The court granted Kawasaki’s motion in part. Tregillis’s original report calculated reasonable-royalty damages using robot operating-profit figures in Schedule 3. His supplemental report instead used operating-profit figures for the accused equipment front-end modules in Schedule 4 and updated calculations in Schedule 12.

The court held that Tregillis may update Schedule 12 to use the Schedule 4 figures. It treated that change as a permissible correction of an error under Federal Rule of Civil Procedure 26(e), which requires parties to supplement expert information that later proves incomplete or incorrect. Tregillis had identified the error during his deposition, and Kawasaki did not object to similar corrections elsewhere in the report.

The court did not permit Tregillis to offer new opinions about how the correction affected hypothetical royalty negotiations. The supplemental report added seven paragraphs discussing a cap on royalty payments and the possibility that Kawasaki should receive no royalty in years when Rorze had no operating profits. Because those opinions were not disclosed in the original report and were added after expert discovery closed, Kawasaki had no opportunity to depose Tregillis about them. The court ruled that the supplementation rule could not be used to present entirely new opinions after the disclosure deadline.

Rorze’s Motion to Exclude

The court granted Rorze’s motion in part and denied it in part. Rorze challenged five categories of Haas’s opinions: damages related to foreign sales, damages incurred before notice, lost-profits damages, reasonable-royalty damages, and commercial success.

The court allowed Haas to testify about damages related to foreign sales. It explained that whether particular sales were legally domestic or foreign concerns infringement liability, not the reliability of an expert’s damages opinion. Rorze had not raised that argument in its summary-judgment motion, and the court’s standing order limited the parties’ summary-judgment filings. The court also found a factual dispute because, although many products were manufactured and delivered abroad, significant parts of the relevant contracts were formed in the United States, were governed by California law, and required sales through a domestic ordering system.

The court excluded Haas’s testimony about damages incurred before Kawasaki gave Rorze actual notice of the alleged infringement. Under 28 U.S.C. § 287(a), a patent owner generally cannot recover infringement damages before marking its products or notifying the alleged infringer. Kawasaki asserted that third-party products containing its robots were covered by the patents but offered no evidence that it made reasonable efforts to ensure those products were properly marked. The court therefore agreed that Haas could not testify about damages before the actual-notice date.

The court allowed Haas to testify about lost-profits damages. Rorze’s objections concerned issues such as noninfringing alternatives, Kawasaki’s manufacturing capacity, market competition, and possible additional costs. The court concluded that these arguments primarily challenged the weight or credibility of Haas’s opinions rather than their reliability under Rule 702. It also found that Haas could rely on discussions with Kawasaki employees and their depositions when forming his opinions.

The court also allowed Haas to testify about reasonable-royalty damages. It rejected Rorze’s arguments that Haas needed separate calculations for each patent-reissue date and that his $10,000 licensing figure lacked a sufficiently definite starting point. Haas explained that the related patents could be licensed as a bundle, that his calculations would be the same for the relevant reissue years, and that his report analyzed the applicable royalty factors in detail.

Finally, the court allowed Haas to testify about commercial success. Rorze argued that Haas improperly relied on the opinions of Kawasaki’s technical expert, Dr. Glew. The court found that reliance on another expert did not make Haas’s opinion unreliable, particularly because Rorze had not shown that Glew’s underlying opinions were unreliable.

Sealing Motions and Disposition

The court granted the related sealing motions because there was good cause to seal material concerning Rorze’s confidential business information.

The court’s final disposition was that Kawasaki’s motion to strike was granted in part, with Tregillis permitted to update Schedule 12 but barred from offering opinions about the effect of that update on hypothetical negotiations. Rorze’s motion to exclude was also granted in part, with Haas barred from testifying about damages incurred before Kawasaki provided actual notice and permitted to testify on the other challenged subjects.

The authoritative version

Read the full 12-page opinion on CourtListener, the free public archive maintained by the Free Law Project.

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