Dear client,
To obtain a permanent injunction, you must establish that you have a legal right to the property in question and that the plaintiffs' actions are infringing upon your rights. In the absence of any official record of ownership, the burden of proof may be higher, but it is not impossible to establish ownership.
To prove ownership and possession of the property, you can rely on any documentary evidence you may have, such as sale deed, lease agreement, mutation entries, tax receipts, etc. You can also produce witnesses who can testify that you have been in possession of the property for a long time, and that the plaintiffs have not made any claim over it during that time.
Additionally, you may consider conducting a survey of the property and creating a detailed map that shows its boundaries and landmarks. This can be useful in establishing your ownership and possession of the property.
If the plaintiffs' claim is destined to be dismissed due to lack of possession and ownership evidence, it is possible that you may be able to obtain a permanent injunction against them. However, the final decision will depend on the evidence presented in court and the legal arguments made by both parties. It is advisable to consult with a local lawyer who specializes in property law to advise you on the best course of action in your specific case.