Access practice tools, as well as industry leading news, customizable alerts, dockets, and primary content, including a comprehensive collection of case law, dockets, and regulations. Leverage...
By Peter Leung
Toro subsidiary Exmark Manufacturing Co.’s patent infringement win against competing lawnmower maker Briggs & Stratton Power Group LLC was vacated Jan. 12 because the trial court improperly deferred to the patent office.
The U.S. Court of Appeals for the Federal Circuit said the trial court should have independently considered Briggs & Stratton’s arguments that Exmark’s patent claim lacked novelty and was obvious. Instead, the trial court rejected Briggs & Stratton’s arguments in a summary judgment because the patent had already survived several reexaminations at the Patent and Trademark Office.
The Federal Circuit sent the case back to the trial court to analyze the invalidity arguments, as well the damages award.
The decision highlights the relationship between district court proceedings and reexaminations, in which a patent owner or third party asks the PTO to verify a patent’s validity. A reexam that finds a patent valid isn’t binding on courts because only the patent owner and PTO are involved, even if another party initiated the proceeding.
By contrast, other validity challenge proceedings, such as inter partes reviews, can have binding effect on other cases because IPRs involve a challenger as well as a patent owner.
The decision also applied a 2016 U.S. Supreme Court case that was supposed to make it easier for patent owners to prove willful infringement. The Federal Circuit found the trial court awarded enhanced damages using a discarded, older approach.
U.S. Patent No. 5,987,863 covers a lawnmower with a unique baffle, a metal structure that directs air flow and grass clippings during operation. After Exmark sued Briggs & Stratton for infringement, the PTO reexamined the patent twice, at the request of Briggs & Stratton and another defendants. In both reexaminations, the PTO upheld the patent’s validity against the same prior inventions and research Briggs & Stratton used to attack the claim in district court.
After the reexaminations, the district court granted Exmark’s motion for summary judgment against Briggs & Stratton’s invalidity arguments, based on the results of the reexams. A jury later ruled in favor of Exmark, awarding $24.3 million in damages. The court then doubled the award, after finding that Briggs & Stratton willfully infringed the patent.
The Federal Circuit vacated the summary judgment ruling, saying the trial court must come to its own independent conclusion about the patent claim’s validity. District courts owe a level of deference to the PTO’s conclusions, but that comes in the form of a presumption that a patent is valid—a presumption that a challenger can still overcome, the court said.
There are also important differences between PTO reexams and district court proceedings, the court said. For example, the PTO examiner and the district court interpreted several terms in the patent claim differently, with the court using a broader interpretation in some instances. Even though the PTO said the patent claim was not anticipated or obvious because of prior inventions, a jury could come to a different conclusion, the court said.
The Federal Circuit also vacated the trial court’s finding that Briggs & Stratton willfully infringed the patent claim. The trial court applied an outdated test when it doubled the damages award, it said.
The trial court’s mistake was that it didn’t allow Briggs & Stratton to present its invalidity evidence to the jury because the court had already ruled that those arguments were objectively unreasonable. However, the Supreme Court’s 2016 decision in Halo Elecs., Inc. v. Pulse Elecs., Inc. required the entire question of willful infringement to go before a jury—without a trial court judge playing a gatekeeper role, the Federal Circuit said.
Judge Kara F. Stoll wrote the decision, which Judges Evan J. Wallach and Raymond T. Chen joined.
Carlson, Caspers, Vandenburgh, Lindquist & Schuman PA represented Exmark. Arnold & Porter Kaye Scholer LLP represented Briggs & Stratton.
The case is Exmark Mfg. Co. v. Briggs & Stratton Power Grp., LLC , Fed. Cir., No. 16-2197, 1/12/18 .
To contact the reporter on this story: Peter Leung in Washington at firstname.lastname@example.org
To contact the editor responsible for this story: Mike Wilczek at email@example.com
Copyright © 2018 The Bureau of National Affairs, Inc. All Rights Reserved.
All Bloomberg BNA treatises are available on standing order, which ensures you will always receive the most current edition of the book or supplement of the title you have ordered from Bloomberg BNA’s book division. As soon as a new supplement or edition is published (usually annually) for a title you’ve previously purchased and requested to be placed on standing order, we’ll ship it to you to review for 30 days without any obligation. During this period, you can either (a) honor the invoice and receive a 5% discount (in addition to any other discounts you may qualify for) off the then-current price of the update, plus shipping and handling or (b) return the book(s), in which case, your invoice will be cancelled upon receipt of the book(s). Call us for a prepaid UPS label for your return. It’s as simple and easy as that. Most importantly, standing orders mean you will never have to worry about the timeliness of the information you’re relying on. And, you may discontinue standing orders at any time by contacting us at 1.800.960.1220 or by sending an email to firstname.lastname@example.org.
Put me on standing order at a 5% discount off list price of all future updates, in addition to any other discounts I may quality for. (Returnable within 30 days.)
Notify me when updates are available (No standing order will be created).
This Bloomberg BNA report is available on standing order, which ensures you will all receive the latest edition. This report is updated annually and we will send you the latest edition once it has been published. By signing up for standing order you will never have to worry about the timeliness of the information you need. And, you may discontinue standing orders at any time by contacting us at 1.800.372.1033, option 5, or by sending us an email to email@example.com.
Put me on standing order
Notify me when new releases are available (no standing order will be created)