When is a C* classification challenge typically initiated?

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Source: FAQ (MPEP-Based) BlueIron Update: 2024-09-27 5 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. A C* classification challenge is typically initiated upon the receipt of an amendment to a patent application. The Manual of Patent Examining Procedure (MPEP) 909.01(c) states: “ Upon the receipt of an amendment which makes a C* classification challenge necessary, steps should be taken promptly in accordance with the C* classification challenge outlined in MPEP § 909.01(d). ” This indicates that the amendment must be of a nature that potentially affects the classification of the application, necessitating a review of its current classification. Related Rules from the Manual of Patent Examining Procedure 5 rules Collapse Application Must Be Fully Classified on Receipt MPEP 909.01(b) Required Classifications Required for Examiner Assignment MPEP 909.01(b) Permitted Provisional Applications Not Classified or Assigned MPEP 909.01(b) National Security Classified Patent Application Must Be Declassified Before Publication and Allowance MPEP 120 Declassified Patent Application Required MPEP 130 Other Related FAQs 5 FAQs Collapse What are the key elements patent examiners check in amended applications? How does an amendment affect the classification of a patent application? What is a C* classification challenge in patent examination? What is a C* classification challenge? When should a C* classification challenge be submitted for applications with restriction requirements?