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REVERSED
Tech Center 1700 Chemical & Materials Engineering
1735 11671379 - (D)  Ex Parte Menon et al BEST 103 MILLER IP GROUP, PLC GENERAL MOTORS CORPORATION WALKER, KEITH D

Tech Center 3700 Mechanical Engineering, Manufacturing, and Products & Design
3715 10831398 - (D) Ex Parte Krebs BAHR 103 KENYON & KENYON LLP GISHNOCK, NIKOLAI A

AFFIRMED
Tech Center 2100 Computer Architecture and Software
2179 10907412 - (D)  Ex Parte Lau et al COURTENAY 103 CAREY, RODRIGUEZ, GREENBERG & O'KEEFE, LLP ITURRALDE, ENRIQUE W

Tech Center 2600 Communications
2658 10478142 - (D) Ex Parte Fingscheidt et al TORNQUIST 103 King & Spalding LLP YEN, ERIC L

Tech Center 2800 Semiconductors, Electrical and Optical Systems and Components
2899 11724725 - (D) Ex Parte Gopal et al BUI 103 Eschweiler & Associates, LLC SNOW, COLLEEN ERIN 

Tech Center 3700 Mechanical Engineering, Manufacturing, and Products & Design
3742 11524865 - (D)  Ex Parte Diedrick et al ABRAMS 103 FLETCHER YODER MAYE, AYUB A

3745 13176078 - (D) Ex Parte Liang et al OSINSKI 102(b)/103 SIEMENS CORPORATION DAVIS, JASON GREGORY

The “principle of operation” referred to by Appellants relates to the “basic principles” under which the prior art device was designed to operate. In re Ratti, 270 F.2d 810, 813 (CCPA 1959). Under In re Ratti, “a change in the basic principles” refers to change that is fundamental in scope so as to relate to scientific or technical principles under which the invention is designed to operate. We are not persuaded that a “change in the basic principles” occurs by making Liang ’955’s exhaust orifices 48 smaller when Liang ’955’s device, even as modified by Parker, continues to exhaust cooling fluids.

DONNER 6: 102; 8: 581-83, 721-23 

Ratti, In re, 270 F.2d 810, 123 USPQ 349 (CCPA 1959) 2143.01