General Electric Company v. LPP Combustion, LLC

District Court, D. Delaware·Decided March 28, 2025·No. 1:22-cv-00720·Unknown

Opinion

IN THE UNITED STATES DISTRICT COURT FOR THE DISTRICT OF DELAWARE GENERAL ELECTRIC COMPANY, Plaintiff,

Vv. Civil Action No, 22-720-GBW LPP COMBUSTION, LLC, Defendant.

David E. Moore, Bindu A. Palapura, Andrew L. Brown, POTTER ANDERSON & CORROON LLP, Wilmington, Delaware; Mark Reiter, Robert A Vincent, Betty X. Yang, Philip J. Spear, GIBSON, DUNN & CRUTCHER LLP, Dallas, Texas; Timothy P. Best, GIBSON, DUNN & CRUTCHER LLP, Los Angeles, California. Counsel for Plaintiff Richard Charles Weinblatt, STAMOULIS & WEINBLATT LLC, Wilmington, Delaware; Cortney S. Alexander, KENT & RISLEY LLC, Alpharetta, Georgia. Counsel for Defendant

MEMORANDUM OPINION March 28, 2025 Wilmington, Delaware

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GREGORY B. WILLIAMS UNITED STATES DISTRICT JUDGE

Pending before the Court is Plaintiff General Electric Company’s (“GE”) Motion for Judgment on the Pleadings (hereinafter, the “Motion”) challenging the validity of claims 1, 2, 4, 8-10, 12-14, 16, 19, and 20 of U.S. Patent No. 7,435,080 (“the ’080 Patent’) and claims 1-6, 8, 9, 11, 12, 16, 17 and 19 of U.S. Patent No. 7,934,924 (“the Patent”) under 35 U.S.C. § 101. D.I. 80. Defendant LPP Combustion, LLC (“LLP”) opposes GE’s Motion. D.I. 186. The issue has been fully briefed (D.I. 81; D.L 91; D.I. 93), Having reviewed the Motion and all related briefing, the Court finds that the claims of the Patent and the ’924 Patent are not directed to patent- eligible subject matter. Accordingly, the Motion is granted. The ’080 and ’924 Patents are related (the °924 is a divisional of the ’080) and share the same specification (the “Specification”). See D.I. 1, at Ex. E C080 Patent), Ex. D (924 Patent). The °080 Patent acts as “representative” of the two patents. D.I. 8f at 2 (quoting D.L 51 (Joint Claim Construction Brief) at 3-5). These patents “focus[] on controlling the performance of a combustion device (such as a gas turbine) based on sensed information relating to the combustion performance.” Id, (citing °080 Patent, 1:46-57). They “teach|| adding a fuel additive to change combustion performance based on information sensed about the fuel.” /d. (citing °080 Patent, 1:46-57). LPP currently asserts 25 of the 42 total claims (the “Claims”) from the ’080 and □□□□ Patents: claims 1, 2, 4, 8-10, 12-14, 16, 19, and 20 of the 7080 Patent and claims 1-6, 8, 9, 11, 12, 16, 17 and 19 of the °924 Patent (collectively, “the Claims”). The Claims differ little. As discussed in more detail below, the Claims of both patents distill down to the same three steps: (1) sensing a

fuel or combustion characteristic; (2) comparing the sensed characteristic to an acceptable range and outputting the result; and (3) adding an additive (either an enhancer or retardant) to the fuel feed depending on whether the characteristic is above or below the range, in an amount dependent on the fuel flow rate. These three steps match the same steps used by a home thermostat or a person adjusting bath-water temperature: (i) sense, (ii) compare, and (iii) adjust. For the purposes of this motion, clatm 1 of each patent is representative of all Claims in that patent. DI. 81 at 5. a. The ’080 Patent Claims The °080 Patent includes 22 claims. Claim 1 of the ’080 Patent is representative: A fuel feed adjustment system for use with a combustion device having a fuel feed, the system comprising: a sensor for sensing a sensed fuel characteristic of fuel being fed to the combustion device, the sensed fuel characteristic being indicative of a fuel combustion property; a processor for comparing the sensed fuel characteristic to an acceptable range for the fuel characteristic, the acceptable range corresponding to a predetermined range for the fuel combustion property, and for outputting an output when the sensed fuel characteristic is outside the acceptable range; and an additive feed for feeding an additive to the fuel feed, the additive feed being triggered by the output, wherein the additive includes a combustion enhancer or a combustion retardant depending on whether the sensed fuel characteristic is above or below the acceptable range, and wherein an amount of additive is dependent on a sensed fuei flow rate, 080 Patent at claim 1. The claim does not claim the result of bringing the fuel characteristic within an acceptable range. Instead, the claim requires adding an “additive” when the processor determines the fuel outside the predetermined range. °080 Patent at claim 1 The following asserted ’080 Patent claims are dependent on claim 1. Dependent claim 2 identifies several conventional sensing techniques, /d, at claim 2. Dependent claim 4 requires that the “characteristic” is “indicative of a fuel composition.” dd at claim 4. Dependent claim 8

requires that the sensor senses “indices of fuel performance,” and dependent claim 9 further requires specific indices, Jd. at claims 8, 9. Dependent claim 10 merely requires the combustion device be a “turbine.” Jd. at claim 10. Dependent claim 12 claim requires the fuel feed be natural gas. Id. at claim 12. Dependent claims 13 and 14 require that the additive is “provided from an additive feed source” and “controlled via a feed control mechanism.” Jd at claims 13, 14. Dependent claim 16 specifies that the processor can be “an analog controller or a digital computer ot both.” Jd. at claim 16. The additional asserted independent claims—19 and 20—are directed to the same subject matter as claim 1: claim 20 merely converts the “fuel feed adjustment system” of claim 1 into a “method of adjusting a fuel feed,” whereas claim 19 merely restates claim 1 using non-substantive different wording. Jd. at claims 19, 20; see D.I. 81 at 6. b. The ’924 Patent Claims The °924 Patent includes 20 claims. Claim 1 of the °924 Patent limits the fuel feed to a “saseous” fuel feed, and requires sensing a “combustion” characteristic instead of a “fuel” characteristic, but is otherwise virtually identical to claim | of the ’080 Patent: A fuel feed adjustment system for use with a combustion device having a gaseous fuel feed, the system comprising: a sensor for sensing a combustion characteristic for the combustion device; a processor for comparing the sensed combustion characteristic to an acceptable range and for outputting an output that indicates when the sensed combustion characteristic is outside the acceptable range; and an additive feed for feeding an additive to the gaseous fuel feed, the additive feed being triggered by the output, wherein additive includes a combustion enhancer or a combustion retardant depending on whether the sensed combustion characteristic is above or below the acceptable range, and wherein an amount of additive is dependent on a sensed fuel flow rate.

Patent at claim 1, As with the ’080 Patent, the other asserted independent claim, claim 16 is essentially the method claim analogue of claim 1, further requiring sensing a fuel flow rate as well as a combustion characteristic. D.I. 81 at 7. The following asserted ’924 Patent claims are dependent on claim 1: dependent claims 2 and 17 limit the sensed combustion characteristic to a flame characteristic (924 Patent at claims 2, 17), and claim 3 further limits that characteristic to a group of flame characteristics (e.g., flame color). Jd. at claim 3. Claims 4 and 8—like claim 2 of the ’080 Patent—provide lists of known types of sensors. Jd. at claims 4, 8, Claim 5 limits the sensed combustion characteristic to an indicator of combustion stability or performance, and claim 6, which depends on claim 5, further requires that combustion stability be based on flow or pressure fluctuations. Jd. at claims 5,6. Dependent claims 9, 11, and 12 of the °924 Patent repeat claim 10 (“turbine”), claim 12 (“natural gas” fuel), and claim 14 (“feed control mechanism”) of the ’080 Patent. /d. at claims 9, 11, 12. ec.

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General Electric Company v. LPP Combustion, LLC, (D. Del. 2025).

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