SUMMARY: The United States Patent and Trademark Office (USPTO) is publishing this notice to clarify which patent-related regulations are currently in effect. The USPTO is identifying theapplicability date of those regulatory provisions relating to applications containing patentably indistinct claims which are enjoined in Tafas v. Dudas, 530 F. Supp. 2d 786 (E.D. Va. 2008). Should the injunction be lifted, those regulations will apply only to applications filed on or after any new effective date that would be published by the USPTO in the future.