The date after which an option can no longer be either exercised or traded. This date will be specified in the contract specification for the product in question.
The Calendar date or event after which any obligations arising under the Guarantee will cease and, typically the time by which any Call, Claim or Demand must have been received by the Guarantor.
The date when a patent has run its full term in a country and is no longer protected there. Can also be used to mean lapsing.