Searching over 5,500,000 cases.

Buy This Entire Record For $7.95

Download the entire decision to receive the complete text, official citation,
docket number, dissents and concurrences, and footnotes for this case.

Learn more about what you receive with purchase of this case.

TQ Delta, LLC v. 2Wire, Inc.

United States District Court, D. Delaware

April 10, 2019

TQ DELTA, LLC, Plaintiff;
2WIRE, INC., Defendant.

          Brian E. Farnan and Michael J. Farnan, FARNAN LLP, Wilmington, DE; Peter J. McAndrews, Thomas J. Wimbiscus, James P. Murphy, Paul W. McAndrews, Anna M. Targowska, and Rajendra Chiplunkar, MCANDREWS, HELD & MALLOY, LTD, Chicago, IL, attorneys for Plaintiff.

          Jody C. Barillare, MORGAN LEWIS & BOCKIUS LLP, Wilmington, DE; Brett Schuman, Rachel M. Walsh, and Monte M.F. Cooper, GOODWIN PROCTER LLP, San Francisco, CA, attorneys for Defendant.



         Currently pending before the Court are the parties' various motions for summary judgment (D.I. 715, 735, 739, 746, 856) and Daubert motions (D.I. 718, 720, 730). The parties have fully briefed the issues. (D.I. 716, 719, 721, 731, 736, 740, 747, 841, 843, 850, 853, 854, 855, 858, 915, 918, 919, 925, 928, 929, 930). After full consideration of the briefing, the motions are resolved as follows.

         I. BACKGROUND

         Plaintiff TQ Delta filed this lawsuit against Defendant 2Wire on November 4, 2013 asserting infringement of twenty-four patents. (D.I. 1). I have divided the case into separate trials based on families of patents. (D.I. 280). For the Family 2 trial, Plaintiff currently asserts two claims of U.S. Patent No. 7, 453, 881 ("the '881 patent"). The Accused Products are 2Wire's 5168N, 5168NV, 5268AC, and i3812V CPE devices. The '881 patent relates to DSL technologies. Specifically, the '881 patent claims systems and methods of "reducing latency, or end-to-end delay of data transmission, in asynchronous transfer mode ('ATM') communications systems ... thereby generating a high data rate connection in ATM communication systems." (D.I. 486 at 4).

         The asserted claims read as follows:

17. A plurality of bonded transceivers, each bonded transceiver utilizing at least one transmission parameter value to reduce a difference in latency between the bonded transceivers, wherein a data rate for the first of the bonded transceivers is different for a second of the bonded transceivers.
18. The transceivers of claim 17, wherein the at least one transmission parameter value is a Reed Solomon Coding parameter value, an interleaving parameter value, a coding parameter value, a codeword size value or a framing parameter value.

         ('881 patent, cl. 17-18). I have construed three of the terms in the '881 patent and have set out the constructions below:

Claim Term

Court's Construction


"communications device capable of transmitting and receiving data wherein the transmitter portion and receiver portion share at least some common circuitry"

"plurality of bonded transceivers"

"two or more transceivers located on the same side of two or

more physical links where each transceiver is configurable to

transmit or receive a different portion of the same bit stream

via a different one of the physical links, wherein 'configurable

to' precludes rebuilding, recoding, or redesigning any of the

components in a 'plurality of bonded transceivers" '

"utilizing at least one transmission parameter value to reduce a difference in latency between the bonded transceivers"

"utilizing at least one transmission parameter value to reduce a difference in configuration latency between the bonded transceivers"

(D.I. 492 at 2).

         There are international standards relevant to the functionality of DSL systems. Both the International Telecommunications Union ("ITU") and the IEEE have developed such standards. The relevant standards for the dispute between the parties are ITU-T G.998.2 ("G.998.2"), entitled "Ethernet-based multi-pair bonding," and IEEE 802.3ah-2004. Plaintiff contends that compliance with these standards establishes infringement. Defendant disagrees.

         Both Plaintiff and Defendant have submitted various motions for summary judgment on issues of infringement and invalidity, as well as Daubert motions.


         A. Summary Judgment

         "The court shall grant summary judgment if the movant shows that there is no genuine dispute as to any material fact and the movant is entitled to judgment as a matter of law." Fed.R.Civ.P. 56(a). The moving party has the initial burden of proving the absence of a genuinely disputed material fact relative to the claims in question. Celotex Corp. v. Catrett, 477 U.S. 317, 330 (1986). Material facts are those "that could affect the outcome" of the proceeding, and "a dispute about a material fact is 'genuine' if the evidence is sufficient to permit a reasonable jury to return a verdict for the nonmoving party." Lamont v. New Jersey, 637 F.3d 177, 181 (3d Cir. 2011) (quoting Anderson v. Liberty Lobby, Inc., 477 U.S. 242, 248 (1986)). The burden on the moving party may be discharged by pointing out to the district court that there is an absence of evidence supporting the non-moving party's case. Celotex, 477 U.S. at 323.

         The burden then shifts to the non-movant to demonstrate the existence of a genuine issue for trial. Matsushita Elec. Indus. Co. v. Zenith Radio Corp., 475 U.S. 574, 586-87 (1986); Williams v. Borough of West Chester, Pa., 891 F.2d 458, 460-61 (3d Cir. 1989). A non-moving party asserting that a fact is genuinely disputed must support such an assertion by: "(A) citing to particular parts of materials in the record, including depositions, documents, electronically stored information, affidavits or declarations, stipulations ..., admissions, interrogatory answers, or other materials; or (B) showing that the materials cited [by the opposing party] do not establish the absence ... of a genuine dispute ...." Fed.R.Civ.P. 56(c)(1).

         When determining whether a genuine issue of material fact exists, the court must view the evidence in the light most favorable to the non-moving party and draw all reasonable inferences in that party's favor. Scott v. Harris, 550 U.S. 372, 380 (2007); Wishkin v. Potter, 476 F.3d 180, 184 (3d Cir. 2007). A dispute is "genuine" only if the evidence is such that a reasonable jury could return a verdict for the non-moving party. Anderson, 477 U.S. at 247-49. If the non-moving party fails to make a sufficient showing on an essential element of its case with respect to which it has the burden of proof, the moving party is entitled to judgment as a matter of law. See Celotex Corp., 477 U.S. at 322.

         B. Daubert

         Federal Rule of Evidence 702 sets out the requirements for expert witness testimony and states:

A witness who is qualified as an expert by knowledge, skill, experience, training, or education may testify in the form of an opinion or otherwise if: (a) the expert's scientific, technical, or other specialized knowledge will help the trier of fact to understand the evidence or to determine a fact in issue; (b) the testimony is based on sufficient facts or data; (c) the testimony is the product of reliable principles and methods; and (d) the expert has reliably applied the principles and methods to the facts of the case.

         Fed. R. Evid. 702. The Third Circuit has explained:

Rule 702 embodies a trilogy of restrictions on expert testimony: qualification, reliability and fit. Qualification refers to the requirement that the witness possess specialized expertise. We have interpreted this requirement liberally, holding that a broad range of knowledge, skills, and training qualify an expert. Secondly, the testimony must be reliable; it must be based on the methods and procedures of science' rather than on 'subjective belief or unsupported speculation; the expert must have good grounds for his or her belief. In sum, Daubert holds that an inquiry into the reliability of scientific evidence under Rule 702 requires a determination as to its scientific validity. Finally, Rule 702 requires that the expert testimony must fit the issues in the case. In other words, the expert's testimony must be relevant for the purposes of the case and must assist the trier of fact. The Supreme Court explained in Daubert that Rule 702's helpfulness standard requires a valid scientific connection to the pertinent inquiry as a precondition to admissibility.
By means of a so-called "Daubert hearing," the district court acts as a gatekeeper, preventing opinion testimony that does not meet the requirements of qualification, reliability and fit from reaching the jury. See Daubert ("Faced with a proffer of expert scientific testimony, then, the trial judge must determine at the outset, pursuant to Rule 104(a) of the Federal Rules of Evidence whether the expert is proposing to testify to (1) scientific knowledge that (2) will assist the trier of fact to understand or determine a fact in issue.").

Schneider ex rel. Estate of Schneider v. Fried, 320 F.3d 396, 404-05 (3d Cir. 2003) (cleaned up).[1]

         C. Patent Ineligible Subject Matter

         Section 101 of the Patent Act defines patent-eligible subject matter. It provides: "Whoever invents or discovers any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof, may obtain a patent therefor, subject to the conditions and requirements of this title." 35 U.S.C. § 101. The Supreme Court has recognized an implicit exception for three categories of subject matter not eligible for patentability-laws of nature, natural phenomena, and abstract ideas. Alice Corp. Pty. v. CLS Bank Int'l, 134 S.Ct. 2347, 2354 (2014). The purpose of these carve outs is to protect the "basic tools of scientific and technological work." Mayo Collaborative Servs. v. Prometheus Labs., Inc., 132 S.Ct. 1289, 1293 (2012). "[A] process is not unpatentable simply because it contains a law of nature or a mathematical algorithm," as "an application of a law of nature or mathematical formula to a known structure or process may well be deserving of patent protection." Id. at 1293-94 (internal quotation marks and emphasis omitted). In order "to transform an unpatentable law of nature into a patent-eligible application of such a law, one must do more than simply state the law of nature while adding the words 'apply it.'" Id. at 1294 (emphasis omitted).

         The Supreme Court recently reaffirmed the framework laid out in Mayo "for distinguishing patents that claim laws of nature, natural phenomena, and abstract ideas from those that claim patent-eligible applications of those concepts." Alice, 134 S.Ct. at 2355. First, the court must determine whether the claims are drawn to a patent-ineligible concept. Id. If the answer is yes, the court must look to "the elements of the claim both individually and as an 'ordered combination'" to see if there is an '"inventive concept'-i.e., an element or combination of elements that is 'sufficient to ensure that the patent in practice amounts to significantly more than a patent upon the [ineligible concept] itself.'" Id. (alteration in original). "A claim that recites an abstract idea must include 'additional features' to ensure that the [claim] is more than a drafting effort designed to monopolize the [abstract idea]." Id. at 2357. Further, "the prohibition against patenting abstract ideas cannot be circumvented by attempting to limit the use of [the idea] to a particular technological environment." Id. at 2358 (quoting Bilski v. Kappos, 561 U.S. 593, 610-11 (2010)). Thus, "the mere recitation of a generic computer cannot transform a patent-ineligible abstract idea into a patent-eligible invention." Id. For this second step, the machine-or-transformation test can be a "useful clue," although it is not determinative. Ultramercial, Inc. v. Hulu, LLC, 772 F.3d 709, 716 (Fed. Cir. 2014).

         "Whether a claim is drawn to patent-eligible subject matter under § 101 is an issue of law," and "is a matter of both claim construction and statutory construction." In re Bilski, 545 F.3d 943, 951 (Fed. Cir. 2008), aff'd sub nom. Bilski v. Kappos, 561 U.S. 593 (2010). "Claim construction is a question of law . ..." In re Nuijten, 500 F.3d 1346, 1352 (Fed. Cir. 2007).

         D. Infringement

         A patent is infringed when a person "without authority makes, uses, offers to sell, or sells any patented invention, within the United States ... during the term of the patent...." 35 U.S.C. § 271(a). A two-step analysis is employed in making an infringement determination. See Markman v. Westview Instruments, Inc., 52 F.3d 967, 976 (Fed. Cir. 1995) (en banc), aff'd, 517 U.S. 370 (1996). First, the court must construe the asserted claims to ascertain their meaning and scope. See Id. The trier of fact must then compare the properly construed claims with the accused infringing product. See Id. at 976. This second step is a question of fact. See Bai v. L & L Wings, Inc., 160F.3d 1350, 1353 (Fed. Cir. 1998).

         "Literal infringement of a claim exists when every limitation recited in the claim is found in the accused device." Kahn v. Gen. Motors Corp., 135 F.3d 1472, 1477 (Fed. Cir. 1998). "If any claim limitation is absent from the accused device, there is no literal infringement as a matter of law." Bayer AG v. Elan Pharm. Research Corp., 212 F.3d 1241, 1247 (Fed. Cir. 2000). If an accused product does not infringe an independent claim, it also does not infringe any claim depending thereon. See Wahpeton Canvas Co. v. Frontier, Inc., 870 F.2d 1546, 1553 (Fed. Cir. 1989). However, "[o]ne may infringe an independent claim and not infringe a claim dependent on that claim." Monsanto Co. v. Syngenta Seeds, Inc., 503 F.3d 1352, 1359 (Fed. Cir. 2007) (internal quotations omitted). The patent owner has the burden of proving infringement and must meet its burden by a preponderance of the evidence. See SmithKline Diagnostics, Inc. v. Helena Lab. Corp., 859 F.2d 878, 889 (Fed. Cir. 1988) (citations omitted).

         When an accused infringer moves for summary judgment of non-infringement, such relief may be granted only if at least one limitation of the claim in question does not read on an element of the accused product, either literally or under the doctrine of equivalents. See Chimie v. PPG Indus., Inc.,402 F.3d 1371, 1376 (Fed. Cir. 2005); see also TechSearch, L.L.C v. Intel Corp.,286 F.3d 1360, 1369 (Fed. Cir. 2002) ("Summary judgment of noninfringement is . . . appropriate where the patent owner's proof is deficient in meeting an essential part of the legal standard for infringement, because such failure will render all other facts immaterial."). Thus, summary judgment of non-infringement can only be granted if, after viewing the facts in the light most favorable to the non-movant, ...

Buy This Entire Record For $7.95

Download the entire decision to receive the complete text, official citation,
docket number, dissents and concurrences, and footnotes for this case.

Learn more about what you receive with purchase of this case.