MOREL V. SEKHAR et al. - Page 22



               Interference No. 103,995                                                              Paper 29                        
               Morel v. Sekhar                                                               Page 22                                 

               Moreover, there is no indication that the Examiner ever questioned the criticality of the 1:1                         
               to 9:1 range (see also, p. 8 above).  Finally, to the extent Morel may be relying on the                              
               Laurent Declaration (MAEx 1), it is insufficient to establish the criticality of the claimed 1:1                      
               to 9:1 weight range for the reasons set forth above.                                                                  
                       Therefore, for the above reasons, Morel has not sustained its burden of showing                               
               unexpected results sufficient to overcome the prima facie case of obvious of Morel claims                             
               2 and 5 over Sekhar ‘513 (SDEx 3).                                                                                    
                               3.      Are the coatings obtained using the compositions of Morel                                     
                                       claims 2 and 5 materially different from the coatings obtained                                
                                       by Sekhar ‘513                                                                                

                       Morel still further argues that the coatings of Morel and Sekhar ‘513 are                                     
               fundamentally different, i.e.,                                                                                        
                       the coating of Sekhar ‘513 is formed by sintering (column 2, lines 3-6) and is                                
                       non-glassy (column 11, line 23).  To the contrary, the coating of Morel is a                                  
                       vitreous (glassy) coating (column 2, lines 34-46).  [Paper 20, pp. 4-5.]                                      
                       Sekhar replies that column 6, lines 50-59 and column 7, lines 1-8 of Sekhar ‘513                              
               describes production of “an impervious silica skin (in an oxidizing atmosphere), i.e., a                              
               vitreous/glassy/amorphous phase” (Paper 25, p. 4).                                                                    
                       44.  Sekhar ‘513 describes that                                                                               
                               The coating advantageously contains at least one silicon-containing                                   
                       compound, which may be included as a reactant and/or as a non-reactant,                                       
                       advantageously in a substantial amount, usually accounting for 30 wt % or                                     
                       more of the coating, advantageously 50 wt % or more.  Silicon compounds                                       
                       when reacted or sintered form on the body a relatively impervious silica skin,                                
                       providing excellent resistance against oxidation and corrosion.  Formation of                                 
                       such a silicious skin can be enhanced by including colloidal silica in the                                    
                       carrier.  [SDEx 3, c. 6, ll. 50-59.]                                                                          
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