72Protection for attorney if unaware of invalidity

72 Protection for attorney if unaware of invalidity (a) a power of attorney is invalid; and (b) the attorney purports to exercise a power under the power of attorney without knowing the power of attorney is invalid. (2) This section also applies if— (a) a power exercised under a power of attorney is invalid; and (b) the attorney purports to exercise the power without knowing the power is invalid. (3) The attorney does not incur any liability, either to the principal or anyone else, because of the invalidity. (4) Anything done by the attorney in the exercise of the power under the invalid power of attorney or of an invalid power is, for all purposes, taken to have been done as if the power of attorney or power were not invalid.