Is it acceptable to reference limitations from another claim?

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Source: FAQ (MPEP-Based) BlueIron Update: 2024-09-30 10 Rules 5 Related FAQs This page is an FAQ based on guidance from the Manual of Patent Examining Procedure. It is provided as guidance, with links to the ground truth sources. This is information only: it is not legal advice. Yes, referencing limitations from another claim is generally acceptable. According to MPEP 2173.05(f) : “A claim which makes reference to a preceding claim to define a limitation is an acceptable claim construction which should not necessarily be rejected as improper or confusing under 35 U.S.C. 112(b) or pre-AIA 35 U.S.C. 112, second paragraph.” This means that patent applicants can refer to limitations in other claims without automatically causing indefiniteness issues. Related Rules from the Manual of Patent Examining Procedure 10 rules Collapse Claim Can Refer to Another Claim Limitation MPEP 2173.05(f) Recommended Reference to Another Claim is Acceptable Under Section 112(b) MPEP 2173.05(f) Claim Must Be Definite Under Section 112(b) MPEP 2173 Claims Must Particularly Point Out and Distinctly Claim the Invention MPEP 2173 Required Claims Must Particularly Point Out and Distinctly Claim the Invention MPEP 2173 Definiteness Requirement for Claims MPEP 2173 Required Claims Must Be Clear and Definite MPEP 2173 Requirement for Clear Claim Language MPEP 2173 Permitted Claims Must Clearly Define Boundaries MPEP 2173 Required Requirement for Clear Claim Boundaries MPEP 2173 Required Other Related FAQs 5 FAQs Collapse What are some examples of acceptable claim references? When can referencing limitations from another claim lead to rejection? Can method claims reference limitations from apparatus claims? What should examiners consider when reviewing dependent claims? How does referencing limitations affect product-by-process claims?