---
kind: "unit"
title: "37"
title_heading: "Patents, Trademarks, and Copyrights"
key: "chI/subchA/part2"
level: "part"
label: "Part 2"
heading: "Rules of Practice in Trademark Cases"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/37/chI-subchA-part2"
sections_count: 159
---

# Part 2 — Rules of Practice in Trademark Cases

Title 37 C.F.R. — Patents, Trademarks, and Copyrights › Chapter I — United States Patent and Trademark Office, Department of Commerce › Subchapter A — General

## Sections

- [§2.1. Reserved](/cfr/37/2.1.md)
- [§2.2. Definitions.](/cfr/37/2.2.md)
- [§2.6. Trademark fees.](/cfr/37/2.6.md)
- [§2.7. Fastener recordal fees.](/cfr/37/2.7.md)
- [§2.11. Requirement for representation.](/cfr/37/2.11.md)
- [§2.12-2.16. Reserved](/cfr/37/2.12-2.16.md)
- [§2.17. Recognition for representation.](/cfr/37/2.17.md)
- [§2.18. Correspondence, with whom held.](/cfr/37/2.18.md)
- [§2.19. Revocation or withdrawal of attorney.](/cfr/37/2.19.md)
- [§2.20. Declarations in lieu of oaths.](/cfr/37/2.20.md)
- [§2.21. Requirements for receiving a filing date.](/cfr/37/2.21.md)
- [§2.22. Requirements for a base application.](/cfr/37/2.22.md)
- [§2.23. Requirement to correspond electronically with the Office and duty to monitor status.](/cfr/37/2.23.md)
- [§2.24. Designation and revocation of domestic representative by foreign applicant.](/cfr/37/2.24.md)
- [§2.25. Documents not returnable.](/cfr/37/2.25.md)
- [§2.27. Pending trademark application index; access to applications.](/cfr/37/2.27.md)
- [§2.31. Reserved](/cfr/37/2.31.md)
- [§2.32. Requirements for a complete trademark or service mark application.](/cfr/37/2.32.md)
- [§2.33. Verified statement for a trademark or service mark.](/cfr/37/2.33.md)
- [§2.34. Bases for filing a trademark or service mark application.](/cfr/37/2.34.md)
- [§2.35. Adding, deleting, or substituting bases.](/cfr/37/2.35.md)
- [§2.36. Identification of prior registrations.](/cfr/37/2.36.md)
- [§2.37. Description of mark.](/cfr/37/2.37.md)
- [§2.38. Use by predecessor or by related companies.](/cfr/37/2.38.md)
- [§2.39. Reserved](/cfr/37/2.39.md)
- [§2.41. Proof of distinctiveness under section 2(f).](/cfr/37/2.41.md)
- [§2.42. Concurrent use.](/cfr/37/2.42.md)
- [§2.43. Service mark.](/cfr/37/2.43.md)
- [§2.44. Requirements for a complete collective mark application.](/cfr/37/2.44.md)
- [§2.45. Requirements for a complete certification mark application; restriction on certification mark application.](/cfr/37/2.45.md)
- [§2.46. Principal Register.](/cfr/37/2.46.md)
- [§2.47. Supplemental Register.](/cfr/37/2.47.md)
- [§2.48. Office does not issue duplicate registrations.](/cfr/37/2.48.md)
- [§2.51. Drawing required.](/cfr/37/2.51.md)
- [§2.52. Types of drawings and format for drawings.](/cfr/37/2.52.md)
- [§2.53. Requirements for drawings filed through the TEAS.](/cfr/37/2.53.md)
- [§2.54. Requirements for drawings submitted on paper.](/cfr/37/2.54.md)
- [§2.56. Specimens.](/cfr/37/2.56.md)
- [§2.57-2.58. Reserved](/cfr/37/2.57-2.58.md)
- [§2.59. Filing substitute specimen(s).](/cfr/37/2.59.md)
- [§2.61. Action by examiner.](/cfr/37/2.61.md)
- [§2.62. Procedure for submitting response.](/cfr/37/2.62.md)
- [§2.63. Action after response.](/cfr/37/2.63.md)
- [§2.64. Reinstatement of applications and registrations abandoned, cancelled, or expired due to Office error.](/cfr/37/2.64.md)
- [§2.65. Abandonment.](/cfr/37/2.65.md)
- [§2.66. Revival of applications abandoned in full or in part due to unintentional delay.](/cfr/37/2.66.md)
- [§2.67. Suspension of action by the Patent and Trademark Office.](/cfr/37/2.67.md)
- [§2.68. Express abandonment (withdrawal) of application.](/cfr/37/2.68.md)
- [§2.69. Compliance with other laws.](/cfr/37/2.69.md)
- [§2.71. Amendments to correct informalities.](/cfr/37/2.71.md)
- [§2.72. Amendments to description or drawing of the mark.](/cfr/37/2.72.md)
- [§2.73. Amendment to recite concurrent use.](/cfr/37/2.73.md)
- [§2.74. Form and signature of amendment.](/cfr/37/2.74.md)
- [§2.75. Amendment to change application to different register.](/cfr/37/2.75.md)
- [§2.76. Amendment to allege use.](/cfr/37/2.76.md)
- [§2.77. Amendments between notice of allowance and statement of use.](/cfr/37/2.77.md)
- [§2.80. Publication for opposition.](/cfr/37/2.80.md)
- [§2.81. Post publication.](/cfr/37/2.81.md)
- [§2.82. Marks on Supplemental Register published only upon registration.](/cfr/37/2.82.md)
- [§2.83. Conflicting marks.](/cfr/37/2.83.md)
- [§2.84. Jurisdiction over published applications.](/cfr/37/2.84.md)
- [§2.85. Classification schedules.](/cfr/37/2.85.md)
- [§2.86. Multiple-class applications.](/cfr/37/2.86.md)
- [§2.87. Dividing an application.](/cfr/37/2.87.md)
- [§2.88. Statement of use after notice of allowance.](/cfr/37/2.88.md)
- [§2.89. Extensions of time for filing a statement of use.](/cfr/37/2.89.md)
- [§2.91. Petition for expungement or reexamination.](/cfr/37/2.91.md)
- [§2.92. Institution of ex parte expungement and reexamination proceedings.](/cfr/37/2.92.md)
- [§2.93. Expungement and reexamination procedures.](/cfr/37/2.93.md)
- [§2.94. Action after expungement or reexamination.](/cfr/37/2.94.md)
- [§2.95-2.98. Reserved](/cfr/37/2.95-2.98.md)
- [§2.99. Application to register as concurrent user.](/cfr/37/2.99.md)
- [§2.101. Filing an opposition.](/cfr/37/2.101.md)
- [§2.102. Extension of time for filing an opposition.](/cfr/37/2.102.md)
- [§2.103. Reserved](/cfr/37/2.103.md)
- [§2.104. Contents of opposition.](/cfr/37/2.104.md)
- [§2.105. Notification to parties of opposition proceeding(s).](/cfr/37/2.105.md)
- [§2.106. Answer.](/cfr/37/2.106.md)
- [§2.107. Amendment of pleadings in an opposition proceeding.](/cfr/37/2.107.md)
- [§2.111. Filing petition for cancellation.](/cfr/37/2.111.md)
- [§2.112. Contents of petition for cancellation.](/cfr/37/2.112.md)
- [§2.113. Notification of cancellation proceeding.](/cfr/37/2.113.md)
- [§2.114. Answer.](/cfr/37/2.114.md)
- [§2.115. Amendment of pleadings in a cancellation proceeding.](/cfr/37/2.115.md)
- [§2.116. Federal Rules of Civil Procedure.](/cfr/37/2.116.md)
- [§2.117. Suspension of proceedings.](/cfr/37/2.117.md)
- [§2.118. Undelivered Office notices.](/cfr/37/2.118.md)
- [§2.119. Service and signing.](/cfr/37/2.119.md)
- [§2.120. Discovery.](/cfr/37/2.120.md)
- [§2.121. Assignment of times for taking testimony and presenting evidence.](/cfr/37/2.121.md)
- [§2.122. Matters in evidence.](/cfr/37/2.122.md)
- [§2.123. Trial testimony in inter partes cases.](/cfr/37/2.123.md)
- [§2.124. Depositions upon written questions.](/cfr/37/2.124.md)
- [§2.125. Filing and service of testimony.](/cfr/37/2.125.md)
- [§2.126. Form of submissions to the Trademark Trial and Appeal Board.](/cfr/37/2.126.md)
- [§2.127. Motions.](/cfr/37/2.127.md)
- [§2.128. Briefs at final hearing.](/cfr/37/2.128.md)
- [§2.129. Oral argument; reconsideration.](/cfr/37/2.129.md)
- [§2.130. New matter suggested by the trademark examining attorney.](/cfr/37/2.130.md)
- [§2.131. Remand after decision in inter partes proceeding.](/cfr/37/2.131.md)
- [§2.132. Involuntary dismissal for failure to take testimony.](/cfr/37/2.132.md)
- [§2.133. Amendment of application or registration during proceedings.](/cfr/37/2.133.md)
- [§2.134. Surrender or voluntary cancellation of registration.](/cfr/37/2.134.md)
- [§2.135. Abandonment of application or mark.](/cfr/37/2.135.md)
- [§2.136. Status of application or registration on termination of proceeding.](/cfr/37/2.136.md)
- [§2.141. Ex parte appeals.](/cfr/37/2.141.md)
- [§2.142. Time and manner of ex parte appeals.](/cfr/37/2.142.md)
- [§2.143. Reserved](/cfr/37/2.143.md)
- [§2.144. Reconsideration of decision on ex parte appeal.](/cfr/37/2.144.md)
- [§2.145. Appeal to court and civil action.](/cfr/37/2.145.md)
- [§2.146. Petitions to the Director.](/cfr/37/2.146.md)
- [§2.147. Petition to the Director to accept a paper submission.](/cfr/37/2.147.md)
- [§2.148. Director may suspend certain rules.](/cfr/37/2.148.md)
- [§2.149. Letters of protest against pending applications.](/cfr/37/2.149.md)
- [§2.151. Certificate.](/cfr/37/2.151.md)
- [§2.153. Publication requirements.](/cfr/37/2.153.md)
- [§2.154. Publication in Official Gazette.](/cfr/37/2.154.md)
- [§2.155. Notice of publication.](/cfr/37/2.155.md)
- [§2.156. Not subject to opposition; subject to cancellation.](/cfr/37/2.156.md)
- [§2.158. Reregistration of marks registered under Acts of 1881, 1905, and 1920.](/cfr/37/2.158.md)
- [§2.160. Affidavit or declaration of continued use or excusable nonuse required to avoid cancellation of registration.](/cfr/37/2.160.md)
- [§2.161. Requirements for a complete affidavit or declaration of use in commerce or excusable nonuse; requirement for the submission of additional information, exhibits, affidavits or declarations, and specimens; and fee for deletions of goods, services, and/or classes from a registration.](/cfr/37/2.161.md)
- [§2.162. Notice to registrant.](/cfr/37/2.162.md)
- [§2.163. Acknowledgment of receipt of affidavit or declaration.](/cfr/37/2.163.md)
- [§2.164. Correcting deficiencies in affidavit or declaration.](/cfr/37/2.164.md)
- [§2.165. Petition to Director to review refusal.](/cfr/37/2.165.md)
- [§2.166. Affidavit of continued use or excusable nonuse combined with renewal application.](/cfr/37/2.166.md)
- [§2.167. Affidavit or declaration under section 15.](/cfr/37/2.167.md)
- [§2.168. Affidavit or declaration under section 15 combined with affidavit or declaration under sections 8 or 71, or with renewal application.](/cfr/37/2.168.md)
- [§2.171. New certificate on change of ownership.](/cfr/37/2.171.md)
- [§2.172. Surrender for cancellation.](/cfr/37/2.172.md)
- [§2.173. Amendment of registration.](/cfr/37/2.173.md)
- [§2.174. Correction of Office mistake.](/cfr/37/2.174.md)
- [§2.175. Correction of mistake by owner.](/cfr/37/2.175.md)
- [§2.176. Consideration of above matters.](/cfr/37/2.176.md)
- [§2.177. Action on court order under section 37.](/cfr/37/2.177.md)
- [§2.181. Term of original registrations and renewals.](/cfr/37/2.181.md)
- [§2.182. Time for filing renewal application.](/cfr/37/2.182.md)
- [§2.183. Requirements for a complete renewal application.](/cfr/37/2.183.md)
- [§2.184. Refusal of renewal.](/cfr/37/2.184.md)
- [§2.185. Correcting deficiencies in renewal application.](/cfr/37/2.185.md)
- [§2.186. Petition to Director to review refusal of renewal.](/cfr/37/2.186.md)
- [§2.188. Reserved](/cfr/37/2.188.md)
- [§2.189. Requirement to provide domicile address.](/cfr/37/2.189.md)
- [§2.190. Addresses for trademark correspondence with the United States Patent and Trademark Office.](/cfr/37/2.190.md)
- [§2.191. Action of the Office based on the written record.](/cfr/37/2.191.md)
- [§2.192. Business to be conducted with decorum and courtesy.](/cfr/37/2.192.md)
- [§2.193. Trademark correspondence and signature requirements.](/cfr/37/2.193.md)
- [§2.194. Identification of trademark application or registration.](/cfr/37/2.194.md)
- [§2.195. Filing date of trademark correspondence.](/cfr/37/2.195.md)
- [§2.196. Times for taking action: Expiration on Saturday, Sunday or Federal holiday.](/cfr/37/2.196.md)
- [§2.197. Certificate of mailing.](/cfr/37/2.197.md)
- [§2.198. Filing of correspondence by Priority Mail Express®.](/cfr/37/2.198.md)
- [§2.200. Assignment records open to public inspection.](/cfr/37/2.200.md)
- [§2.201. Copies and certified copies.](/cfr/37/2.201.md)
- [§2.206. Trademark fees payable in advance.](/cfr/37/2.206.md)
- [§2.207. Methods of payment.](/cfr/37/2.207.md)
- [§2.208. Deposit accounts.](/cfr/37/2.208.md)
- [§2.209. Refunds.](/cfr/37/2.209.md)