Header graphic for print
Chicago IP Litigation Tracking Northern District of Illinois IP Cases

Claims Construed Narrowly to Avoid Indefiniteness

Posted in Claim Construction

Only the First, Ltd. v. Seiko Epson Corp., No. 07 C 1333 & 09 C 4655, Slip Op. (N.D. Ill. Sep. 29, 2010) (Dow, J.).

Judge Dow construed the claims of plaintiff’s patent covering a color printing system, and granted in part defendant’s motion for summary judgment of indefiniteness. Of particular note, the Court construed the following terms:

  • The Court, by agreement, construed the base colors – violet, blue, green, yellow, orange and red – using the same wavelengths the Court used in construing a related patent earlier in the case — click here for that opinion in the Blog’s archives.
  • As in the prior constructions, the Court held that the components of component colors (e.g., red and orange for orange-red) must have the highest intensity of all the components. Otherwise, a color ordered red, orange, blue and violet could be both orange-red and violet-blue, a nonsensical result.
  • The Court held that the patentee gave "intensity" the same "unconventional" meaning — a synonym for "quantity" — as in the prior constructions because the two patents share a specification and the claims did not define the term differently.
  • The Court held that the term "peak reflectance percentage" used in claims 7 and 9 was not supported by the specification and, therefore, those claims were invalid because they contained new matter. While a new matter determination is a question of fact, no reasonable jury could find support for peak reflectance percentage in the specification, warranting summary judgment.
  • "Peak intensity" and "dominant intensity" were both indefinite. Pursuant to the Court’s construction of intensity, each color can only have a single intensity, rendering peak and dominant intensities nonsensical.
  • The terms "cyan," "magenta," and "yellow" were indefinite to the extent that they were amenable to multiple constructions. The Court, however, used the narrowest possible constructions as follows: "cyan" was "green-blue"; "magenta" was "violet-red"; and "yellow" was "orange-yellow" or "green-yellow."
  • "Each of a different color" was not indefinite. Color referred to the six claimed colors, as well as black and white. Shades of a color were not "different."