Perpetual Use Rights
MSDN subscriptions purchased through certain channels provide perpetual use rights that allow subscribers to continue using certain software products obtained through an active subscription after the subscription has expired. However, subscribers are not entitled to updates for that software after the subscription has expired, nor do they continue to have access to software or product keys through MSDN Subscriber Downloads or to other subscription services that are a benefit of having an active subscription. Product keys that were acquired while the subscription was active can continue being used until all activations for those keys have been exhausted. If an MSDN subscription is transferred or sold, any perpetual use rights are transferred to the new party and the seller can no longer use the software.
Generally, MSDN subscriptions that do not provide perpetual use rights include:
MSDN subscriptions purchased through Enterprise Agreement Subscription, Open Value Subscription, Campus Agreement, or other “subscription” Volume Licensing programs
MSDN subscriptions offered through the Microsoft Partner Network to competency partners and Visual Studio Professional subscriptions offered to Microsoft Action Pack partners.
In the above cases, subscribers can no longer use any software provided through the MSDN subscription after it expires.