Presstek v. Creo

2007 DNH 044
District Court, D. New Hampshire·Decided March 30, 2007·No. 05-CV-65-PB·Published·Cited by 2 cases

Opinion

UNITED STATES DISTRICT COURT FOR THE DISTRICT OF NEW HAMPSHIRE

Presstek, Inc.

v. Case N o . 05-cv-65-PB Opinion N o . 2007 DNH 044

Creo, Inc. and Creo Americas, Inc.

MEMORANDUM AND ORDER

Creo, Inc. and Creo Americas, Inc. (collectively “Creo”)

have moved to strike supplemental expert disclosures filed by Presstek, Inc. on the ground that they were filed after the parties’ agreed-upon deadline for expert disclosures. Presstek denies that the disclosures were late and alternatively claims that they should not be stricken because it was justified in making the disclosures when it did, Creo was not unfairly prejudiced by the late disclosures and, in any event, a less drastic sanction is all that is necessary under the circumstances.

I. BACKGROUND

A. The Infringement Claim Presstek is the owner of U.S. Patent N o . 5,353,705 (filed Sept. 2 2 , 1993) (“the ‘705 Patent”), entitled “Lithographic Printing Members Having Secondary Ablation Layers For Use With Laser Discharge Imaging Apparatus.” The ‘705 Patent discloses a multilayer lithographic printing plate suitable for laser imaging. The ‘705 Patent’s sole independent claim reads:

1 . A lithographic printing member directly imageable by laser discharge, the member comprising:

a. a topmost first layer; and b . a second layer underlying the first layer, the second layer being characterized by ablative absorption of laser radiation;

c. a third layer underlying the second layer, the third layer:

i . being substantially transparent to the laser radiation;

i i . being ablated only partially in response to ablation of the second layer; and iii. differing from the first layer in its affinity for at least one printing liquid selected from the group consisting of ink and a fluid that repels ink.

In the underlying patent infringement action, Presstek has sued Creo, claiming Creo’s lithographic printing plate, the Clarus W L , infringes the ‘705 Patent because it is comprised o f :

(1) a topmost silicon layer, (2) an underlying second layer made of carbon black/nitrocellulose which fully ablates1 during imaging, and (3) an underlying third layer made of amorphous Polyethlene Terephthalate (“PET”) which partially ablates in response to heat generated during ablation of the carbon black/nitrocellulose layer. The parties disagree as to whether the Clarus WL has a third layer of amorphous PET and, if s o , whether the third layer partially ablates during the laser imaging process. B. Discovery Plan A court-approved Amended Discovery Plan sets the deadlines for expert disclosures in this case. (Doc. Nos. 1 9 , 5 4 ) . The initial Discovery Plan includes a paragraph entitled “Dates Of Disclosure of Experts And Experts’ Written Reports And Supplementations.”2 (Doc. N o . 19 at 5 ) . The paragraph states

1 The ‘705 Patent defines “ablate” to mean “decomposes into gases and volatile fragments.” ‘705 Patent col.5 ll.16-19.

2 The caption is taken from Civil Form 2 , “Sample Discovery Plan,” which is appended to the Local Rules. The form calls for the specification of expert disclosure dates for plaintiffs and defendants as well as any agreed-upon dates for supplemental disclosures.

The parties will exchange case-in-chief testifying expert reports on issues for which each party bears the burden of proof (e.g., patent infringement and damages for Plaintiff, patent invalidity for Defendants)

on February 6, 2006. The parties will exchange rebuttal testifying expert reports on issues for which each party does not bear the burden of proof (e.g., patent validity for Plaintiff, patent non-infringement and damages for Defendants) on March 8 , 2006.

Depositions of testifying experts will occur within the following 30 days.

The Magistrate Judge subsequently approved an Assented-To Motion To Amend the Discovery Plan, which set September 1 5 , 2006 as the date for the completion of discovery and extended the expert disclosure dates to July 2 1 , 2006 for initial expert reports and August 1 8 , 2006 for rebuttal expert reports. (Doc. N o . 5 4 ) . C. Dr. Gido’s Initial Infringement Report In accordance with the amended discovery plan, Presstek disclosed a report prepared by its infringement expert, D r . Samuel P. Gido, on July 2 1 , 2006. (Presstek Opposition to Motion for Summ. J., Ex. 2 , Doc. N o . 60-4 (“Gido I ” ) ) . In preparing the report, D r . Gido employed several different techniques to examine both imaged and unimaged samples of the Clarus W L . Using transmission electron microscopy (“TEM”) on an unimaged sample, Dr. Gido concluded that the Clarus WL includes a topmost silicone

layer and an underlying second layer of carbon black/nitrocellulose, which together measure 0.5 microns thick. Through selected area electron diffraction (“SAED”), he also determined that the Clarus WL has a 6-7 micron thick layer of amorphous PET between the carbon black/nitrocellulose layer and a semi-crystalline PET substrate. D r . Gido also used scanning electron microscopy (“SEM”) and atomic force microscopy (“AFM”) on an imaged sample to measure the depth of the features that result from imaging. Using SEM, D r . Gido obtained depth measurements ranging from 1.3 to 2.0 microns, depending upon the location sampled. Using AFM, D r . Gido obtained depth measurements ranging from 1.2 to 1.8 microns. He then subtracted his thickness measurement of the top two layers (0.5 microns) from the combined range of depth measurements for imaged features (1.2 to 2.0 microns) to determine that imaging produced features that extend from 0.7 to 1.5 microns into the amorphous PET. Dr. Gido then opined that imaging extended into the amorphous PET because the amorphous PET partially ablated in response to heat generated in the carbon black/nitrocellulose layer during its ablation. D r . Gido did not perform any additional tests in an effort to specifically demonstrate that PET gas molecules were

released as a byproduct of the imaging process. D. Creo’s Experts’ Rebuttal On August 1 8 , 2006, Creo responded with rebuttal reports from its experts, D r . Michael F. Rubner and Brian G. Eastman. (Creo’s Assented-To Motion For Leave To File Sur-reply, Ex. 8 , Doc. N o . 74-11 (“Rubner Rebuttal”); Presstek’s Sur-reply to Creo’s Motion for Summ. J., Ex. 9, Doc. N o . 76-6 (“Eastman Rebuttal”)). They reported that the actual thickness of the top two layers of the Clarus WL is at least 2 microns thick, rather than 0.5 microns as reported by D r . Gido. D r . Gido’s measurement, they opined, undermines his conclusion that imaging extends into the amorphous PET. Furthermore, they claimed that Dr. Gido had failed to offer any persuasive evidence that PET removal results from ablation even if his depth measurements were correct. E. Deposition of Creo’s Expert, Dr. Rubner On September 1 4 , 2006, Presstek’s counsel took D r . Rubner’s deposition. (Creo’s Sur-reply to its Motion for Summ. J., Ex. 1 1 , Doc. N o . 104-17). Presstek’s counsel asked D r . Rubner questions about two tests that D r . Gido had not conducted or

included in his initial report but that, unbeknownst to Creo, he would conduct the next day. First, Presstek’s counsel asked whether measuring terephthalic acid as a byproduct of imaging would indicate partial ablation of PET, to which D r . Rubner replied yes. Id. at 145. Second, he asked D r . Rubner whether optical microscopy could be used to show partial ablation of PET, to which D r . Rubner replied n o . Id. at 146-48. F. Dr. Gido’s Supplemental Report After reviewing Presstek’s expert disclosures, Presstek commissioned D r . Gido to conduct additional testing. On September 1 5 , 2006, the last day scheduled for discovery, and the same day D r . Gido completed his work, Presstek filed supplemental expert disclosures. (Presstek’s Sur-reply to Creo’s Motion for Summ. J., Ex. 1 2 , Doc. N o . 76-10 (“Gido II”)).

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