In Re: Durance

891 F.3d 991
CourtCourt of Appeals for the Federal Circuit
DecidedJune 1, 2018
Docket2017-1486
StatusPublished
Cited by13 cases

This text of 891 F.3d 991 (In Re: Durance) is published on Counsel Stack Legal Research, covering Court of Appeals for the Federal Circuit primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
In Re: Durance, 891 F.3d 991 (Fed. Cir. 2018).

Opinion

Reyna, Circuit Judge.

*992 Timothy D. Durance, Jun Fu, and Parastoo Yaghmaee appeal from a decision by the Patent Trial and Appeal Board affirming an examiner's obviousness rejection of their patent application claims related to a microwave vacuum-drying apparatus and method. Because the Board failed to consider arguments in applicants' reply brief that were properly made in response to the examiner's answer, we vacate the Board's determination of obviousness and remand for the Board to consider applicants' reply-brief arguments in the first instance.

BACKGROUND

A. The '989 Application

On April 14, 2010, inventors Durance, Fu, and Yaghmaee (together, "Durance") filed Patent Application No. 12/682,989 ("'989 application") with the United States Patent and Trademark Office. Durance filed the '989 application as part of the national stage of the Patent Cooperation Treaty pursuant to 35 U.S.C. § 371 . J.A. 663. The '989 application is directed to improved methods and apparatuses for "microwave vacuum-drying of organic materials, such as food products and medicinal plants." J.A. 673. It describes dehydrating organic material, such as fruits and berries, by placing the material in a container, transferring the container to a vacuum chamber, and rotating the container as it moves through the vacuum chamber while applying microwave radiation to the organic material. J.A. 685.

Independent claim 1 is representative of the apparatus claims and provides:

1. An apparatus for dehydrating organic material, comprising:
(a) a vacuum chamber having an input end for introduction of a container for the organic material into the vacuum chamber and a discharge end for removal of the container;
(b) a microwave generator;
(c) a microwave-transparent window for transmission of microwave radiation from the microwave generator into the vacuum chamber;
(d) means for reducing pressure inside the vacuum chamber;
(e) means for loading the container into the input end of the vacuum chamber;
(f) means for rotating the container inside the vacuum chamber so as to tumble the organic material in the container ;
(g) means for moving the rotating container through the vacuum chamber from the input end to the discharge end thereof; and
(h) means for unloading the container of dehydrated organic material from the vacuum chamber at the discharge end thereof.

J.A. 106 (emphasis added). Independent claim 16 is representative of the method claims. J.A. 109. It recites a method of dehydrating organic material using an apparatus like that described in claim 1, including a step for "rotating the container *993 inside the vacuum chamber so as to tumble the organic material in the container." Id. At issue in this appeal is the above-emphasized "means for rotating ... so as to tumble" limitation, which we refer to as the "tumbling limitation."

Figure 4 depicts the claimed apparatus:

J.A. 703. As shown in Figure 4 and described in the '989 application's specification, piston 114 pushes the containers into vacuum chamber 22 from input end 30. J.A. 680. Inside the vacuum chamber, the containers are rotated about their longitudinal, horizontal axes in rotatable cage 64 using ring gears 66 and 68, which are engaged by a motorized gear set. J.A. 679.

Figure 5 depicts the interior of the vacuum chamber, including the interior of a container and motorized gear set 76 and 78 that actuate ring gear 66:

*994 J.A. 704. The interior of the container shows divider walls 146 that "divide the interior space into four segments, to promote the tumbling of the materials in the baskets, as the baskets rotate in the vacuum chamber." J.A. 684.

B. Prior Art

1. Wefers

U.S. Patent No. 6,442,866 ("Wefers")"relates to a method and apparatus for drying or heat-treating substances or products at a pressure other than atmospheric pressure." J.A. 847. Wefers teaches drying food products, like fruit and berries, by loading "transport receptacles" containing the food products into a "treatment chamber" operating at reduced atmospheric pressure, in which the food products are exposed to a heating source, including a microwave source. Id. ; see J.A. 852 col. 2 ll. 51-65; J.A. 853 col. 3 ll. 61-66.

2. Burger

U.S. Patent Application Pub. No. 2005/0019209 ("Burger") is directed to a method and apparatus for "sterilizing containers in which a plasma treatment is executed through excitation of an electromagnetic oscillation so that the plasma is excited in a vacuum in the vicinity of the container regions to be sterilized." J.A. 875. Burger teaches that the containers to be sterilized are inputted into a chamber "with a transport apparatus inside it, which produces an essentially rotating motion of the container during the transport from the arrival to the discharge in the chamber." Id. The containers to be sterilized include "ampules, septic glass containers, syringes, vials, and other so-called parenteralia packages, or in beverage bottles." J.A. 881.

Figure 1 of Burger shows a schematic view of the sterilization device:

*995 J.A. 876. And Figure 2 shows the transportation of the containers on two rollers 10 and 11, which rotate the containers as they move through the device:

Id . According to the written description, rotating the containers through the vacuum chamber during transportation allows for all regions of the containers to be subjected to plasma "in the same manner." J.A. 883.

In addition, Figures 6 and 7 of Burger show the arrangement of a container 2 inside an inclined rotating tube 24, as follows:

*996 J.A. 878, 884.

Free access — add to your briefcase to read the full text and ask questions with AI

Related

Cite This Page — Counsel Stack

Bluebook (online)
891 F.3d 991, Counsel Stack Legal Research, https://law.counselstack.com/opinion/in-re-durance-cafc-2018.