Can CPC symbols be changed during the patent examination process?

Question

Accepted Answer

Source: FAQ (MPEP-Based) BlueIron Update: 2024-09-27 6 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, CPC symbols can be changed during the patent examination process. According to MPEP 909.01(a) : “ The examiner may change or add CPC symbols at any time during prosecution as appropriate. “ Reasons for changing or adding CPC symbols may include: Discovery of more relevant or specific CPC symbols during examination Amendments to the claims that alter the invention’s scope Identification of additional aspects of the invention requiring classification Correction of initial classification errors It’s important to note that while CPC symbols can be modified, significant changes to the controlling classification (first-listed symbol) may impact the examination process and potentially require transferring the application to a different art unit. Related Rules from the Manual of Patent Examining Procedure 6 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) Automated Routing for Examiner Assignment MPEP 909.01(a) Examiner Can Submit Classification Challenge for Improper C* Designations MPEP 909.01(a) Permitted Examiner May Inspect Pertinent Application Materials MPEP 1302.08 Other Related FAQs 5 FAQs Collapse What are C* designations in patent application classification? Can CPC classification for a patent application change during examination? How does CPC classification affect the examination of new patent applications? How are CPC symbols assigned to new patent applications? What are CPC symbols and how do they affect patent application assignment?