Petitioner Columbia appealed, arguing that the Board (i) misinterpreted the claim as covering a range of extension portion sizes and (ii) improperly applied chemical arts cases involving unpredictable technologies to the simple mechanical claims at issue. However, the Board determined that the specification only disclosed an extension portion sized to fit exactly two layers of 5/8-inch drywall and that “a skilled artisan would not consider disclosure … to show possession of the claimed range.” Thus, the Board found the claim invalid because the written description failed to support the range of sizes claimed for the extension portion. The Board found the claim to cover a range of sizes for the extension portion, including a lower bound (large enough to fit two layers of 5/8-inch-thick sheathing), an upper bound (too small to fit three layers of 5/8-inch-thick sheathing), and encompassing all sizes in between. Spac the side panels from the back flange plane by a distance sized large enough to permit two layers of ⅝ inch thick sheathing to be received between the rear edge plane and the back flange plane, but too small to permit three layers of ⅝ inch thick sheathing to be received between the rear edge plane and the back flange plane. The claims are drafted to require an extension portion that: The hanger extends through the sheathing and uses a channel-shaped portion to hold the support beam and an extension portion to define space for the sheathing. The ’510 patent is directed toward a truss hanger used to connect support beams to wall frames in modern buildings. 10,316,510 (“’510 patent”) invalid for a lack of written description support.

31, 2023), the United States Court of Appeals for the Federal Circuit (“Federal Circuit”) affirmed the Patent Trial and Appeal Board (“the Board”) decision finding original claims 1–19 and substitute claims 21–39 of U.S. A recent Federal Circuit decision queries what subject matter an inventor possessed beyond the literal patent disclosure and how a skilled artisan’s knowledge at the time of the invention may impact this issue. Section 112 requires that the claims of a patent are sufficiently supported in the patent’s written description, which includes the specification and drawings.

Artisan zero large size