Ex parte TSAO et al. - Page 5




                 Appeal No. 1996-2766                                                                                                                   
                 Application No. 08/258,909                                                                                                             


                          Accordingly, the above quoted disclosure from Fu teaches                                                                      
                 that the compositions of this reference contain a protein-                                                                             
                 removing effective amount of surfactant.  The claims on appeal                                                                         
                 require that “a protein-dissolving effective amount of                                                                                 
                 surfactant is absent” from the claimed composition (see claim                                                                          
                 15 on appeal).   The examiner, not the appellants, bears the3                                                                                                             
                 initial burden of presenting a prima facie case of                                                                                     
                 obviousness.  In re Oetiker, 977 F.2d 1443, 1445, 24 USPQ2d                                                                            
                 1443, 1444 (Fed. Cir. 1992).  The examiner has not shown or                                                                            
                 established, by evidence or convincing reasoning, why one of                                                                           
                 ordinary skill in the art would have excluded the effective                                                                            
                 protein-removing amount of surfactant used in the compositions                                                                         
                 of Fu.                                                                                                                                 
                          The examiner notes that the claims are drafted with the                                                                       
                 term “comprising” which opens the claim to additional                                                                                  
                 adjuvants (Answer, page 5).  This claim interpretation is not                                                                          
                 well taken since the plain meaning of the claims cannot be                                                                             
                 altered by the common interpretation of “comprising”, i.e.,                                                                            

                          3On this record, there is no allegation or evidence that                                                                      
                 the effective protein-removing by the surfactant of Fu differs                                                                         
                 from the “protein-dissolving” by the surfactant as recited in                                                                          
                 the claims on appeal.                                                                                                                  
                                                                           5                                                                            





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