949 F.3d 685
Fed. Cir.2020Background
- HVO sued Oxygen Frog for infringement of U.S. Pat. Nos. 8,876,941 and 9,372,488; the district court granted partial summary judgment that Oxygen Frog infringed claims 1 and 7.
- Trial proceeded solely on validity; Oxygen Frog defended on obviousness based on two prior-art items: an online forum post (Cornette) and a posted video (Low Tide) by glass artist Tyler Piebes.
- Piebes testified as a fact witness (not disclosed as an expert) and answered questions stating that certain modifications to the prior art would have been "obvious."
- HVO objected to Piebes’ obviousness opinions as improper expert testimony; the district court overruled, gave a limiting instruction, and admitted the deposition testimony.
- The jury found the asserted claims obvious; the district court denied HVO’s JMOL/new-trial motion; HVO appealed.
- The Federal Circuit held the district court abused its discretion by admitting Piebes’ lay testimony on obviousness and remanded for a new trial because the error was not harmless.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Whether a lay (fact) witness may give testimony that the claimed invention would have been "obvious" (opinion on obviousness). | HVO: Such testimony is expert opinion on a central validity issue and is admissible only from a qualified expert disclosed under Rule 26. | Oxygen Frog: Piebes was a lay witness offering perceptions/experience; lay opinion on what seemed obvious is allowable. | Court: Admission was improper—obviousness and its technical underpinnings require expert testimony from a qualified witness. |
| Whether the district court’s limiting instruction cured any prejudice or made the error harmless. | HVO: The limiting instruction did not cure prejudice; HVO lacked expert-discovery protections and the error affected substantial rights. | Oxygen Frog: Any error was harmless; the instruction and court’s review cured any prejudice. | Court: Instruction was insufficient; error was substantially prejudicial and a new trial is required. |
Key Cases Cited
- KSR Int’l Co. v. Teleflex Inc., 550 U.S. 398 (2007) (obviousness analyzed from the perspective of a person of ordinary skill in the art)
- Sundance, Inc. v. DeMonte Fabricating Ltd., 550 F.3d 1356 (Fed. Cir. 2008) (unqualified witness may not testify as an expert on noninfringement or invalidity)
- Wordtech Sys., Inc. v. Integrated Networks Sols., Inc., 609 F.3d 1308 (Fed. Cir. 2010) (standard of review for denial of new trial governed by regional circuit law)
- Williams v. City of Valdosta, 689 F.2d 964 (11th Cir. 1982) (abuse of discretion standard for new-trial decisions in Eleventh Circuit)
- Peat, Inc. v. Vanguard Research, Inc., 378 F.3d 1154 (11th Cir. 2004) (evidentiary errors require a new trial when they cause substantial prejudice)
- Daubert v. Merrell Dow Pharm., Inc., 509 U.S. 579 (1993) (court gatekeeping role for expert admissibility)
- Reese v. Herbert, 527 F.3d 1253 (11th Cir. 2008) (expert discovery rules designed to prevent surprise and allow meaningful testing of opinions)
- R.R. Dynamics, Inc. v. A. Stucki Co., 727 F.2d 1506 (Fed. Cir. 1984) (obviousness is a legal issue that may properly be submitted to a jury)