Skip to content

Menu

LexBlog, Inc. logo
NetworkSub-MenuBrowse by SubjectBrowse by PublisherJoin the NetworkGet StartedSubscribeSupportContact
Search
Close

Rock Dust Dust-Up: Failure to Preserve Issues, Present Evidence at Trial Dooms Appeal

By David Mlaver on April 2, 2020
Email this postTweet this postLike this postShare this post on LinkedIn

The US Court of Appeals for the Federal Circuit affirmed a jury verdict of infringement of a design patent on grounds that purported appellate issues had not been properly presented to the trial court. Hafco Foundry and Machine Co., Inc. v. GMS Mine Repair and Maintenance, Inc., Case No. 18-1904 (Fed. Cir. Mar. 16, 2020) (per curiam) (Newman, J., concurring in part, dissenting in part).

Hafco Foundry and Machine Company owns a US design patent for a rock dust blower, a piece of equipment used in mining. Hafco developed and manufactured the device and contracted with GMS to distribute it. When Hafco terminated the agreement, GMS produced its own rock dust blower. Hafco then sued GMS for infringement of its design patent. The jury found GMS liable for willful infringement and awarded damages. After trial, the district court entered a permanent injunction but, on GMS’s motion, remitted the damages award to zero and granted a new trial on damages, which it stayed pending appeal.

On appeal, GMS argued it was entitled to: (1) judgment of noninfringement as a matter of law, and (2) a new trial on infringement due to allegedly erroneous jury instructions. Hafco did not cross-appeal with respect to damages.

On the jury verdict of infringement, the Federal Circuit found that GMS’s noninfringement argument on appeal had never been made in the district court and that GMS had not presented at trial evidence relating to its appellate argument. Thus, the Court found that GMS had not preserved the argument for appeal.

Regarding jury instructions, GMS first argued that the jury instruction definition of the ordinary observer as “a person who buys and uses the product at issue” was incomplete. The Federal Circuit agreed but rejected this challenge because GMS had not sought a different instruction from the district court and had not explained the purported flaw in the definition. GMS also argued that the jury should have been instructed that “small differences between the accused and the claimed design” will avoid infringement. The Court rejected this challenge as legally incorrect, affirming the district court’s instruction that the question is how the ordinary observer would view the article as a whole. Finally, GMS argued that the jury should have been instructed to “familiarize yourself with each of the prior art designs that been brought to your attention.” The Court rejected that challenge because GMS failed to introduce or even attempt to introduce prior art at trial, and failed to propose a jury instruction on the issue. Thus, the court concluded that GMS had not demonstrated that a new trial was warranted and affirmed the judgment of the district court.

Judge Newman’s Dissent. Judge Newman concurred in the affirmance regarding infringement and in the denial of a new trial. She dissented in part because she would have also decided the damages award, thus avoiding the need for a new trial.

Practice Note. Parties should take care to preserve disputes of law in pre-trial and trial proceedings and to introduce or at least proffer evidence relating to such disputes. Failure to do so may foreclose any possibility of appeal.

Photo of David Mlaver David Mlaver

David Mlaver counsels clients in a wide range of intellectual property litigation matters. He has substantial research experience, including investigating dendritic cell immunity, the mechanism of organization of membrane proteins in lens fiber cells and the genetic correlation of kidney-related diseases. Read David …

David Mlaver counsels clients in a wide range of intellectual property litigation matters. He has substantial research experience, including investigating dendritic cell immunity, the mechanism of organization of membrane proteins in lens fiber cells and the genetic correlation of kidney-related diseases. Read David Mlaver’s full bio.

Read more about David MlaverEmail
Show more Show less
  • Posted in:
    Intellectual Property
  • Blog:
    IP Update
  • Organization:
    McDermott Will & Emery
  • Article: View Original Source

Call us at 1-800-913-0988 or email sales@lexblog.com.

Facebook LinkedIn Twitter RSS
The Library at LexBlog
  • About LexBlog
  • The Field We Built
  • Library at LexBlog
  • Our Beliefs
  • Our Team
  • Contact LexBlog
  • Disclaimer
  • Editorial Policy
  • Terms of Service
  • Get Started
  • Publishing Solutions
  • Compass
  • Submit a Request
  • Support Center
  • System Status
Copyright © 2026, LexBlog, Inc. All Rights Reserved.
Law blog design & platform by LexBlog LexBlog Logo