There is no rent payment
There is no written agreement
Is there any correspondence by owner to tenant asking him to pay rent or to vacate or anything ?
If there is no document and the person has been running the business from past so many years without any objection from owner, then it is a case of adverse possession
For that a civil suit for eviction has to be filed
If somehow you can show through any documentary or other evidence that the premises was given on rent and that tenancy was terminated but despite that the person continued in possession, then the plea of adverse possession by the person cannot be taken
But even in that case you will have to file an eviction suit in the rent controller court
There is no way by which you can directly approach the HC by filing a writ petition
For a writ petition to be filed there needs to be an order of subordinate court which you seek to challenge