Seller's interest in the Lease. This ASSET PURCHASE AGREEMENT (this "Agreement"), dated as of October 18,.An asset purchase agreement is a written legal instrument that formalizes the purchase of a business or significant business asset. Asset purchase agreements can be a useful way to create a new business while leaving unwanted resources and potential issues with the seller. Purchaser shall also pay at Closing any and all amounts due to the State of Washington that are associated with the sale under this Agreement,. An asset purchase agreement, or asset sale agreement, should contain details about the business, buyer, seller, and assets acquired through the transaction.