How to Make Invalid object to Validate?

Dear All,
I am using below below query for finding invalid object:

 select OBJECT_NAME,CREATED,LAST_DDL_TIME from user_objects where status = 'INVALID' ;

and for validating that ,using below sql:

SQL> @?/rdbms/admin/utlrp.sql

but even that , database giving Invalid Object.

Please advice me any other process for validating invalid objects.


Regards,
Ashish