Summary
This Federal Circuit opinion reviews a district court judgment affirming a jury verdict that found LG Electronics infringed Mondis Technology's patent and awarded damages. The appellate court focuses on whether the patent claims lacked adequate written description support for a limitation regarding identifying a "type" of display unit rather than a specific unit. Concluding that no reasonable jury could find substantial evidence supporting the patent's validity under this limitation, the court reverses the judgment and holds the asserted claims invalid. Consequently, the issue of infringement becomes moot.
Topics
Practice areas
Questions Presented
- Whether claims 14 and 15 of the ’180 patent lack adequate written‑description support under 35 U.S.C. §112.
- Whether the district court erred in denying LG’s motion for judgment as a matter of law on written‑description invalidity.
Holdings
- Claims 14 and 15 are invalid for lack of an adequate written description.
- The district court’s denial of the JMOL is reversed because the jury’s finding was not supported by substantial evidence.
Key quotations
“We hold that the ’180 patent is invalid for lack of an adequate written description, we reverse.” (at 1)
“The patent consistently discloses an identifier that is associated with a specific computer… The patent does not expressly disclose an identification number for identifying at least a type of said display unit.” (at 4)
Factual background
Mondis owns U.S. Patent No. 7,475,180 covering a display unit with an identification number. LG manufactured televisions that allegedly infringed claims 14 and 15, which were amended to require an identification number for identifying at least a type of display unit. The dispute centered on whether the patent’s specification provided a written description supporting the "type" limitation.
Procedural history
The district court entered a judgment after a jury found claims 14 and 15 of U.S. Patent No. 7,475,180 valid and infringed. The court denied LG's motions for judgment as a matter of law on written‑description invalidity, upheld the jury's verdict, vacated the original damages award, and later entered a reduced damages award. Both parties appealed.