Ex Parte TAN et al - Page 5




          Appeal No. 2002-1551                                                        
          Application No. 09/286,386                                                  


          ordinary skill in the art would have reasonably expected                    
          photochromic materials of Amon to be compatible with the ink                
          composition of Hwang which comprises an alkaline agent.  While              
          the examiner states that there is no "evidence or expectation"              
          that the photochromic agents of Amon cannot be combined with the            
          composition of Hwang,3 the examiner has placed the cart before              
          the horse in not demonstrating why it would have been prima facie           
          obvious for one of ordinary skill in the art to reasonably expect           
          the photochromic agents of Amon to be a suitable addition to the            
          composition of Hwang.  Accordingly, we are constrained to reverse           
          the examiner's § 103 rejection.                                             
               In conclusion, based on the foregoing, the examiner's double           
          patenting rejection is sustained whereas the § 103 rejection is             
          reversed.  The examiner's decision rejecting the appealed claims            
          is affirmed.                                                                











               3 Page 9 of Answer, penultimate sentence.                              
                                         -5-                                          




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