When the license becomes irrevocable, it may be called an "executed parol license," though it is more accurately called a servitude created by estoppel, a term that better describes both the process used to create the right and the resulting right itself.
If neither situation comes to pass, then on the last day of the year, the trust becomes irrevocable and the gift is made.
For example, if a person owns two parcels, one of which has no access to a public road, sells the landlocked parcel to another person, and gives him permission to build a driveway across the lot the seller has retained, the license becomes irrevocable when the buyer invests in the property, reasonably believing that the permission will not be revoked.
A revocable trust is, of course, revocable and subject to termination or modification at any time by you for any reason but upon your death becomes irrevocable.
The revised UAGA in 2006 has assigned explicit priority to the donor's intent so that the donor consent for organ donation becomes irrevocable and does not require consent or concurrence of any person after the donor's death[ 24].
At that time (usually 24 48 hours after the delivery) her parental rights are terminated and at that point (in most states) the relinquishment becomes irrevocable.
Upon a determination of incapacity, by the method you set forth in the trust, it does become irrevocable if the incapacity is irreversible.
The prime minister at the time, Naoto Kan, has since claimed Tepco was poised to pull out all of its employees, believing the situation had become irrevocable.
The Digambara monastic community denounced the codification, and the schism between the two communities became irrevocable.
As it turns out, they both succeeded but such was the drama and discord along the way that by the summer of 1977 the two clubs had become irrevocable enemies.
