DCT

5:03-cv-01512

Voda v. Cordis Corp

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Amended Complaint
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I. Executive Summary and Procedural Information

  • Parties & Counsel:
  • Case Identification: 5:03-cv-01512, W.D. Okla., 08/03/2004
  • Venue Allegations: Venue is alleged to be proper because a substantial part of the events giving rise to the plaintiff's claims occurred in the district.
  • Core Dispute: Plaintiff alleges that Defendant's XB series of guiding catheters infringes three U.S. patents related to the design of angioplasty guide catheters.
  • Technical Context: The technology lies in the field of interventional cardiology, specifically the geometric design of guide catheters used to provide stable access to the coronary arteries during angioplasty procedures.
  • Key Procedural History: The complaint alleges that Plaintiff contacted Defendant in March 2002 to provide notice of alleged infringement by the XB series of guiding catheters and that Defendant refused to take a license in June 2002. Subsequent to the filing of this complaint, the patents-in-suit underwent reexamination proceedings. Notably, an inter partes reexamination of the '195 Patent resulted in the cancellation of all claims. Multiple reexaminations of the '213 Patent resulted in the confirmation of claims 1-3 and 5, with claim 4 being cancelled.

Case Timeline

Date Event
1991-01-23 Earliest Priority Date for '625, '213, and '195 Patents
1995-08-29 U.S. Patent No. 5,445,625 Issued
2000-07-04 U.S. Patent No. 6,083,213 Issued
2002-03-14 Plaintiff contacts Defendant regarding alleged infringement
2002-06-20 Defendant refuses to obtain a license
2002-11-05 U.S. Patent No. 6,475,195 Issued
2004-08-03 First Amended Complaint Filed
2010-11-16 Reexamination Certificate US 6,083,213 C1 Issued
2012-08-21 Reexamination Certificate US 6,083,213 C2 Issued
2013-02-20 Reexamination Certificate US 6,083,213 C3 Issued
2014-11-18 Reexamination Certificate US 6,475,195 C1 Issued

II. Technology and Patent(s)-in-Suit Analysis

U.S. Patent No. 5,445,625 - "Angioplasty Guide Catheter"

  • Issued: August 29, 1995

The Invention Explained

  • Problem Addressed: The patent's background section describes the principal problem with prior art "Judkins-type" catheters: a lack of "backup support" when used for angioplasty ´625 Patent, col. 2:6-9 When an operator pushes a balloon catheter through the guide catheter to treat a blockage (stenosis), the reactive "pushback" force can cause the tip of the Judkins catheter to prolapse, or become dislodged from the opening (ostium) of the coronary artery ´625 Patent, col. 2:9-17
  • The Patented Solution: The invention is a guide catheter with a novel multi-curve geometry designed to provide superior backup support ´625 Patent, abstract The specific sequence of curves and straight portions causes a segment of the catheter to rest "substantially contiguous" with the wall of the ascending aorta when deployed ´625 Patent, col. 9:20-23 This creates a stable "axis of support" that extends across the aorta directly opposite the coronary ostium, effectively countering the pushback forces that cause prior art catheters to fail ´625 Patent, col. 9:32-40 ´625 Patent, Fig. 8D
  • Technical Importance: By creating a more stable platform, the invention was designed to increase the safety and success rate of angioplasty procedures, particularly for crossing tight stenotic lesions. ´625 Patent, col. 7:42-49

Key Claims at a Glance

The complaint does not identify specific asserted claims but reserves the right to identify them later. U.S. Patent No. 5,445,625 contains one independent claim, Claim 1. The essential elements of Claim 1 include:

  • An elongate flexible tubular member comprising in consecutive arrangement:
    • a first straight proximal portion;
    • a second straight portion joined to the first and having a length of about 1.5 to 2.5 centimeters;
    • a tertiary curved portion defining a junction of the first and second straight portions with an obtuse angle of 130° to 150°;
    • a secondary curved portion joined to the second straight portion with an arcuate curvature of about 150° to 180°;
    • a third straight portion joined to the secondary curved portion;
    • a fourth straight portion joined to the third and defining a terminal distal tip; and
    • a primary curved portion at the junction of the third and fourth straight portions with an obtuse angle of 140° to 160°.

U.S. Patent No. 6,083,213 - "Angioplasty Guide Catheter"

  • Issued: July 4, 2000

The Invention Explained

  • Problem Addressed: As a continuation of the application leading to the '625 Patent, the '213 Patent addresses the same technical problem: the inadequate backup support of conventional Judkins-type catheters, which can lead to catheter prolapse during angioplasty procedures. ´213 Patent, col. 2:2-19
  • The Patented Solution: The '213 Patent claims a method of using a catheter with the specific geometry described in the patent family. The method involves advancing a catheter with this geometry and engaging the inner wall of the aorta with a portion of the catheter body such that it creates a stable, supportive platform opposite the coronary ostium. ´213 Patent, abstract ´213 Patent, col. 30:50-65
  • Technical Importance: This patent claims the method of use for the novel catheter design, protecting not just the device itself but the specific technique for achieving superior support during an angioplasty procedure. ´213 Patent, col. 7:49-55

Key Claims at a Glance

The complaint does not identify specific asserted claims. U.S. Patent No. 6,083,213 contains two independent claims, Claims 1 and 4. Claim 4 was cancelled during reexamination. The essential elements of Claim 1 include:

  • A method for advancing a catheter through the aorta and into a coronary ostium, comprising the steps of:
    • providing a catheter including an elongate catheter body adapted to slidably receive a therapeutic catheter;
    • advancing the catheter body distal end through the aortic arch; and
    • engaging the aorta inner wall with a portion of the catheter body such that when the distal end is in the ostium, the catheter body engages the opposite wall of the aorta along a line having a length of about 1.5 cm or greater.

U.S. Patent No. 6,475,195 - "Angioplasty Guide Catheter"

  • Issued: November 5, 2002

Technology Synopsis

  • As part of the same patent family, the '195 Patent describes an assembly for guiding a therapeutic catheter. ´195 Patent, col. 28:30-34 It focuses on the physical structure of a catheter with a specific multi-bend profile designed to create a stable anchor point against the aortic wall, thereby overcoming the "prolapse" issue associated with prior art Judkins catheters. ´195 Patent, col. 21:51-62

Asserted Claims & Accused Features

  • Asserted Claims: The complaint does not specify claims. The sole independent claim is Claim 1. However, all claims (1-6) of the '195 Patent were cancelled during a subsequent inter partes reexamination, with a certificate issued on November 18, 2014.
  • Accused Features: The complaint alleges that Defendant's XB guiding catheter infringes the '195 Patent. Compl. ¶16

III. The Accused Instrumentality

Product Identification

  • The complaint identifies "at least the XB guiding catheter" as an infringing product. Compl. ¶16

Functionality and Market Context

  • The complaint does not provide a detailed technical description of the accused XB guiding catheter's structure or functionality. It alleges that Defendant Cordis is in the business of making and selling medical devices including guiding catheters for use in coronary angioplasty Compl. ¶3 and that the accused XB guiding catheter is "covered by" the patents-in-suit Compl. ¶16 No probative visual evidence provided in complaint.

IV. Analysis of Infringement Allegations

The complaint alleges infringement in a conclusory manner, stating that the XB guiding catheter is "covered by" the '625, '213, and '195 Patents Compl. ¶16 It does not include a claim chart or any specific mapping of the accused product's features to the elements of the asserted claims. Therefore, a detailed claim chart summary cannot be constructed based on the allegations in the complaint.

  • Identified Points of Contention:
    Based on the patents' emphasis on their novel geometry and resulting function, the infringement analysis for the surviving patents will likely focus on the following questions:
    • Scope Questions ('625 Patent): A central question for the apparatus claims of the '625 Patent will be whether the physical shape of the XB catheter meets the specific geometric limitations of Claim 1. This includes determining if the accused catheter possesses, in sequence, a "tertiary curved portion" with an obtuse angle between 130°-150°, a "secondary curved portion" with an arc of 150°-180°, and a "primary curved portion" with an obtuse angle of 140°-160°.
    • Technical Questions ('213 Patent): For the method claim of the '213 Patent, a key evidentiary question will be whether the use of the XB catheter results in the functional outcome required by the claim. Specifically, this raises the question of whether using the XB catheter causes a portion of it to engage the aortic wall "along a line having a length of about 1.5 cm or greater" while the tip is in the coronary ostium. Proving this would likely require evidence of the catheter's in vivo performance.

V. Key Claim Terms for Construction

The complaint does not identify any claim terms for construction. However, based on the technology, practitioners would likely focus on terms that define the novel shape and function of the invention.

  • The Term: "substantially contiguous"

    • Context and Importance: This term, found in the abstracts of the patents, is central to the asserted point of novelty, which is the creation of a large, stable contact surface against the aortic wall, as distinguished from the "point of contact" of prior art catheters ´625 Patent, col. 5:35-41 The definition of this term will determine how much contact is required to infringe.
    • Intrinsic Evidence for Interpretation:
      • Evidence for a Broader Interpretation: The specification does not provide a precise numerical value for "contiguous," which could support an argument that any contact that is functionally more significant than the prior art's point contact meets the limitation.
      • Evidence for a Narrower Interpretation: The specification repeatedly emphasizes the goal of creating a large area of support to anchor the catheter ´625 Patent, col. 22:38-51 Further, Claim 1 of the related '213 Patent quantifies the engagement as being along a line of "about 1.5 cm or greater," which a party could argue informs the meaning of "substantially contiguous" for the entire patent family. ´213 Patent, col. 30:63-65

  • The Term: "a generally rectilinear axis of support"

    • Context and Importance: This term, also from the patent abstracts, describes the functional result of the patented geometry-an axis of force that directly opposes the "pushback" forces encountered during angioplasty ´625 Patent, col. 8:45-54 The construction of this term is critical for determining whether the accused product achieves its function in the same way as the invention.
    • Intrinsic Evidence for Interpretation:
      • Evidence for a Broader Interpretation: A party might argue that any configuration providing support that is more "direct" than the angled, hinge-like support of a prior art Judkins catheter (as shown in Fig. 8E) would meet the definition.
      • Evidence for a Narrower Interpretation: The patents contrast this "rectilinear" axis with the prior art, suggesting it requires a specific geometric arrangement of catheter segments extending across the aorta, as illustrated in Figure 8D. A party could argue that any significant deviation or curvature in the accused product's corresponding support structure would fall outside the scope of this term. ´625 Patent, col. 22:35-42

VI. Other Allegations

  • Indirect Infringement: The complaint alleges that Defendant is subject to jurisdiction for "inducing the use of certain medical products" within the district Compl. ¶5 However, the formal count for infringement (Count I) does not explicitly plead a theory of induced infringement, focusing instead on direct infringement through acts of making, selling, and offering for sale. Compl. ¶16
  • Willful Infringement: The complaint alleges that Defendant's infringement is willful Compl. ¶18 This allegation is based on alleged pre-suit knowledge of the patents, citing a letter from Dr. Voda to Cordis dated March 14, 2002, and Cordis's subsequent refusal to take a license on June 20, 2002. Compl. ¶¶13-14 Compl. ¶17

VII. Analyst's Conclusion: Key Questions for the Case

  • A central issue will be one of geometric correspondence: Can Plaintiff demonstrate that the accused XB catheter possesses the specific, complex sequence of obtuse-angled curves and straight segments recited in the apparatus claims, or does the accused product achieve its function through a distinct and non-infringing geometry?
  • A key evidentiary question will be one of in-vivo functionality: Does the use of the XB catheter in a clinical setting result in a "substantially contiguous" contact area with the aortic wall that creates the claimed "generally rectilinear axis of support," or is there a fundamental mismatch in its real-world operational mechanics compared to the functional requirements of the patents?
  • A threshold question for the litigation concerns the viability of the overall case: Given that all claims of the '195 Patent were cancelled in reexamination subsequent to the complaint's filing, the dispute is necessarily focused on the '625 and '213 patents. The case will turn on whether the specific apparatus and method claims of these surviving patents can be proven to read on the accused product.
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