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Judge Andrews construes claims relating to analyzing samples with a chromatography system.

Judge Andrews recently issued a claim construction opinion in Alltech Associates., Inc. v. Teledyne Instruments, Inc., C.A. No. 13-425-RGA (D. Del. Aug. 25, 2014).  The following terms from the plaintiff’s patents, U.S. Patent Nos. 8,115,930, 8,305,581, 8,305,582, and 8,314,934, were construed by the Court:

  • “during a/the/said chromatographic run”
  • “collecting the one or more components from the stream in a faction collector during the chromatographic run in response to a change in the composite signal during said chromatographic run”
  • “a fraction collector operatively adapted to collect a fraction in response to a change in the composite signal during said chromatographic run”
  • “collecting the one or more components from the stream in a fraction collector during the chromatographic run in response to a change in at least one of said signals during said chromatographic run”
  • “a fraction collector to collect at least one fraction corresponding to one of said components in response to a change in at least one of said signals during said chromatographic run”
  • “composite signal”
  • “obliterate”
  • “actively controlling fluid flow”
  • “active splitter”
  • “actively moving”

The following terms from the defendant’s patents, U.S. Patents Nos. 7,419,598 and 8,414,773, were construed:

  • “solvent-level indicating signal”
  • “initiating a replenishment process”
  • “immersing a solvent compatible portion of a pressure sensor or bubbler for generating the solvent-level indicating signal in the solvent reservoir before the chromatographic run”
  • “target time of run resolution”
  • “gradient profile”
  • “performing chromatography on the sample with the at least one gradient run for samples in which the target resolution and target time of run resolution were met with the at least one gradient run”
  • “pilot run”

 

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