by Dennis Crouch
The USPTO recently issued a notice of proposed rulemaking that could significantly impact patent practice, particularly in the realm of terminal disclaimers filed to overcome non-statutory double patenting rejections. Under the proposed rule, a terminal disclaimer must include an agreement that the patent will be unenforceable if it is tied directly or indirectly to another patent that has any claim invalidated or canceled based on prior art (anticipation or obviousness under 35 U.S.C. 102 or 103). The new enforceability requirement would be in addition to the existing provisions that require a terminal disclaimer to match the expiration date of the disclaimed patent to the referenced patent and promise enforcement only during common ownership.
This is a major proposal that fundamentally alters the effect of terminal disclaimers.
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