my father just died he was never listed on my birth certif or any other document as my father how do I establish perternity

My condolences on your loss. A few years ago, paternity was proved by providing testimony of others as evidence. Today you would likely need to provide DNA evidence. If he has already been buried or cremated, the options are limited.There are some important things you should know, even though I don’t have enough information here to discuss your standing in your loved one's estate. Other relationships he had will be critical - a spouse, other unclaimed children you may not know about, etc. If a person dies without a Will in Oklahoma, probate is required to legally handle the estate. If he had a Will, Trust or other estate plan arrangements, those would affect the situation as well.Without proof of paternity, as you appear to have understood, you inherit nothing if he has no estate plan naming you (Will, Trust, or other arrangement) as a fiduciary or an heir or beneficiary. Of course, you may also have no responsibility for his final bills, burial or disbursement of his estate.You will need an experienced Oklahoma probate lawyer in the county where he lived and owned property to help you sort through this situation and determine your rights and responsibilities. To Your Success,Gale Allison, Principal AttorneyAllison Firm, PLLChttp://www.theallisonfirm.comhttp://www.linkedin.com/in/galeallison.com