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PS 102 – Chapter 4 – An Introduction to Due Diligence Case Law

Due diligence in civil procedure is the idea that a reasonable investigation is necessary before certain kinds of relief are granted or actions can be taken.

For example, due diligent efforts to locate and/or serve a party with civil process is frequently a requirement for a party seeking to use means other than personal service to obtain jurisdiction over a party. Due diligence is also a requirement found in the civil litigation concept of a statute of limitations.

Statutory law does not provide a list of actions which would constitute due diligence. There is no set of statutory law describing it. There is no bright line in the sand which is drawn to guide process servers. Yet the phrase “due diligence” permeates the law, especially with regards to service of process.

So what kinds of relief or actions might be hanging on proper due diligence? Here are some examples:

Lack of due diligence can cause an otherwise strong court case to fail. This happens when the lack of diligence results in a service being held invalid. Once that happens the court will often dismiss a case for lack of jurisdiction.

The cases presented here span a long period of time. It is important to realize that what might have been considered due diligence in the 1920’s is no longer due diligence today.