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U.S Code last checked for updates: May 18, 2025
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Title 35
Part I
Chapter 2
§ 21. Filing date and day for taking action
§ 22. Printing of papers filed
§ 23. Testimony in Patent and Trademark Office cases
§ 24. Subpoenas, witnesses
§ 25. Declaration in lieu of oath
§ 26. Effect of defective execution
§ 27. Revival of applications; reinstatement of reexamination proceedings
§ 28. Award of certificates to accelerate certain matters at the Patent and Trademark Office
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