Palm Entity Acquires Sap Entity on June 30, 20X1

Palm Entity acquires Sap Entity on June 30, 20X1. Palm Entity uses an independent valuation organization to value a patent that was acquired from Sap. As of Dec. 31, 20X1, the valuation team had not finalized their valuation, and the patent was recognized at $500,000 with a useful life of 20 years. Consequentially, goodwill was valued at $200,000. Three months later, Sap was informed by the valuation organization that the patent was actually worth $600,000. By what amount should the carrying amount of the Dec. 31, 20X1 patent be changed? By what amount should goodwill be changed? How much should amortization expense be increased or decreased for 20X1?