Who can sign papers in a patent application when the attorney is suspended?

When an attorney is suspended, the signing authority for papers in a patent application depends on the filing date:

For applications filed before September 16, 2012:

• All named applicants
• Assignee of record of an undivided part interest, along with named applicants retaining an interest
• Assignee of the entire interest
• A registered patent attorney or agent not of record acting under 37 CFR 1.34

For applications filed on or after September 16, 2012:

• A patent practitioner of record
• A patent practitioner not of record acting under 37 CFR 1.34
• The applicant (except for juristic entity applicants, which require a patent practitioner)

This information is provided in Form Paragraph 4.07 of MPEP § 407.