In legal terms, the owner who bought with knowledge of the restraint could be said to have no reliance interest, or to have assumed the risk of any economic loss. In economic terms, it could be said that the market had already discounted for the restraint, so that a purchaser could not show a loss in his investment attributable to it.
28 F.3d 1171, 1177 (Fed. Cir. 1994).
[A] claimants parcel of property [may] not first be divided into what was taken and what was left for the purpose of demonstrating the taking of the former to be complete and hence compensable. To the extent that any portion of property is taken, that portion is always taken in its entirety; the relevant question, however, is whether the property taken is all, or only a portion of, the parcel in question.
508 U.S. 602, 64344 (1993).