Appeal No. 96-2821 Application 08/015,007 semiconductor package constructed as claimed. Fact finding 22, supra. We therefore will not sustain the rejection of claim 5 under section 103. C. New ground of rejection: claim 5 is based on an insufficient disclosure 4. We must give claims their broadest reasonable construction in light of the specification. In re Morris, 43 USPQ2d 1753, 1758 (Fed. Cir. 1997). We may not, however, read limitations into the claims from the specification. In re Van Geuns, 988 F.2d 1181, 1184, 26 USPQ2d 1057, 1059 (Fed. Cir. 1993). 5. If a claimed range includes substantially inoperative values, then the claim is properly rejected under 35 U.S.C. § 112. In re Corkill, 771 F.2d 1496, 1501, 226 USPQ 1005, 1009 (Fed. Cir. 1985). Claim 5 sets no limitation on the thickness ratio of the Cu/Mo/Cu clad layers, yet the disclosure states that a specific range is necessary: When the thickness ratio is 1:1:1, almost all of the packages are inadequate in leak. However, when the thickness ratio is 1:3:1-1:5:1, leak never occurs. The reason for this is supposed to be that, as shown in Fig. 8, the thermal stress to the glass is restricted to not larger than 2kg/mm when the thickness ratio is2 from 1:3:1 to 1:5:1, thereby preventing the glass 13 from leak. (Paper 1 at 8, emphasis added; Fig. 8) On the next page, Applicants state: - xi -Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 NextLast modified: November 3, 2007