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TC Technology LLC v. Sprint Corporation

United States District Court, D. Delaware

November 14, 2019

TC TECHNOLOGY LLC, Plaintiff,
v.
SPRINT CORPORATION and SPRINT SPECTRUM, L.P., Defendants.

          Kelly E. Farnan, Katharine L. Mowery, RICHARDS, LAYTON & FINGER, P.A., Wilmington, DE; Lawrence J. Gotts, LATHAM & WATKINS LLP, Washington, D.C.; Kevin L. Mallen, LATHAM & WATKINS LLP, New York, NY; Gabriel S. Gross, LATHAM & WATKINS LLP, Menlo Park, CA; Stephanie N. Solomon, QUINN EMANUEL URQUHART & SULLIVAN, LLP, New York, NY; David S. Benyacar, Daniel L. Reisner, Maxwell C. Preston, Michael J. Block, ARNOLD & PORTER KAYE SCHOLER LLP, New York, NY. Attorneys for Plaintiff.

          R Montgomery Donaldson, Christina B. Vavala, POLSINELLI PC, Wilmington, DE; B. Trent Webb, Christine A. Guastello, Jordan T. Bergsten, Colman D. McCarthy, Thomas M. Patton, SHOOK, HARDY & BACON LLP, Kansas City, MO; Robert Reckers, David Morehan, SHOOK, HARDY & BACON LLP, Houston, TX; Gary M. Miller, SHOOK, HARDY & BACON LLP, Chicago, IL. Attorneys for Defendants.

          MEMORANDUM OPINION

          ANDREWS, U.S. DISTRICT JUDGE.

         Before the Court is the issue of claim construction for the term "central location" in U.S. Patent No. 5, 815, 488 ("the '488 patent"). The Court has considered the parties' briefs. (D.I. 435, 439, 443).

         I. BACKGROUND

         TC Tech filed this action on March 10, 2016, alleging that Sprint infringed the '488 patent with certain wireless services on its LTE network. (D.I. 1). TC Tech asserts two independent method claims of the '488 patent, both of which include the disputed "central location" term. The claims provide:

1. A method for enabling a plurality of remote locations to transmit data to a central location comprising the steps of:
at each remote location, coding data to be transmitted by translating each group of one or more bits of said data into a transform coefficient associated with a particular baseband frequency in a particular subset of orthogonal baseband frequencies allocated to the remote location, the particular subset of orthogonal baseband frequencies allocated to each remote location being chosen from a set of orthogonal baseband frequencies, the subsets of baseband frequencies allocated to each remote location being mutually exclusive [;]
at each remote location, using an electronic processor, performing an inverse orthogonal transformation on said transform coefficients to obtain a block of time domain data;
at each remote location, utilizing a modulator to modulate said block of time domain data onto a carrier signal for transmission to said central location, said carrier signal having the same carrier frequency for each remote location;
receiving at said central location from one or more of said remote locations, one or more blocks of time domain data modulated on one or more of said carrier signals;
using a demodulator, demodulating said one or more blocks of time domain data from the carrier frequency signal [;]
performing said orthogonal transformation on said demodulated time domain data to reconstruct said ...

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