Green Card Renewal is an important process for Lawful Permanent Residents. Once a Green Card has been issued, Lawful Permanent Residents do not need to do anything else to extend or ensure their status in the U.S. However, the current green cards are valid for a period of 10 years only.
Even though a Green Card has an expiration date, the Permanent Resident status of a person never expires. Once a person has been given Permanent Resident status, it is never taken away unless the person voluntarily gives it up or acts in a way that is contrary to the purpose of a greencard. The Green Card itself is simply official documentation of the status, much like an identification card. Therefore, it is important to keep your card up-to-date. Having an expired Green Card may make it difficult for you to prove that you are a permanent resident, and this could also affect your ability to travel or to prove your eligibility to work in the United States.