During the trial (in 2006) a question arose

During the trial (in 2006) a question arose

During the trial (in 2006), the question of the validity of the power of attorney arose. One party argued that the power of attorney was invalid because it did not contain the date of issue. The other side believed that the power of attorney is in its validity, the date of issue is needed only if the term is determined by the length of time, and since the phrase “Valid until December 31, 2008” is in the disputed power of attorney, it is valid.
Determine whether the power of attorney is valid.

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