Representation without Permission

Dear sir , I ( my company) works as a representative ( facilitator) for a hospital in india , i signed a contract with this hospital in december 2014 , in march 2015 this hospital in india issued me a letter confirming that i am their representative/facilitator for "kazakhstan" ( this is a country in central asia.). my work is to refer patients to this hospital and this hospital pays me a reference fee for all the patients who have been referred by me and treated at this hospital. at the same time i arrange training of doctors who work in various government hospital's in kazakhstan , for this hospitals in kazakhstan pay me a fees for doing this job . In june 2015 , one gentleman from india went to kazakhstan and started offering services for training of doctor's ( who work in various government hospital's in kazakhstan) in the same to the hospital in india ( for which i am representative/facilitator). please note : that this gentleman from india has no permission/contract/authorization from the hospital in india and has used their name , resulting in huge financial damages for me . Now as i am the official representative/facilitator of this hospital in india , can i file a criminal case against this gentleman from india , furthur i have already filed a case u/s 420 , against this gentleman from india and he himself ( and his lawyer) have submitted a criminal revision application , in which they have confirmed that this gentleman visited kazakhstan and had meetings with the doctor's there , so hey themselves have admitted to this fact. If i can file a criminal case , please advice under which section of ipc. Please advice