“权利义务相关的”可以翻译为“related to rights and obligations” 或者 “pertaining to rights and obligations” 。
例如：
We need to clarify the issues related to rights and obligations in this contract.（我们需要澄清这份合同中与权利义务相关的问题。）
The regulations lay out specific provisions pertaining to rights and obligations.（这些法规对权利义务相关事项作出了具体规定 。）