In a recent article published in Law360, partners Ben Katzenellenbogen and Paul Stewart write about a Notice in the Federal Register published by the Director of the Patent and Trademark Office regarding the “Duties of Disclosure and Reasonable Inquiry During Examination, Reexamination, and Reissue, and for Proceedings Before the Patent Trial and Appeal Board.” The article summarize the notice and discusses its significance and implications, as well as procedural questions for practitioners. It also explains the varying perspectives about whether the Notice “clarifies” existing law or not.