As Mentioned in our Terms & Condition and the same will be mentioned in the Agreement as well:
All copyright, design right and other intellectual property in any design, specification, process, method of working or other information relating to Goods or Services shall vest all-time in the name NILTECH. NILTECH only grants to the Customer an irrevocable license to use unless specified in an official agreement/MoU.
Which means that all the rights stays with Niltech until and unless mentioned in an Agreement. If Customer is willing to get/keep the rights, He/She can get a written agreement signed by Niltech Represenatative.