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Manual of Patent Examining Procedure (MPEP)

Chapter 2200

Citation of Prior Art and Ex Parte Reexamination of Patents

United States Patent and Trademark Office

2201Introduction 2202Citation of Prior Art and Written Statements 2203Persons Who May Cite Prior Art or Written Statements 2204Time for Filing Prior Art or Section 301 Written Statements 2205Content of Prior Art or Section 301 Written Statements 2206Submission and Handling of Prior Art or Section 301 Written Statements 2207Entry of Court Decision in Patent File 2208Service of Prior Art or Section 301 Written Statements on Patent Owner 2209Ex Parte Reexamination 2210Request for Ex Parte Reexamination under 35 U.S.C. 302 2211Time for Requesting Ex Parte Reexamination under 35 U.S.C. 302 2212Persons Who May File a Request for Ex Parte Reexamination under 35 U.S.C. 302 2213Representative of Requester 2214Content of Request for Ex Parte Reexamination Filed under 35 U.S.C. 302 2215Fee for Requesting Ex Parte Reexamination under 35 U.S.C. 302 2216Substantial New Question of Patentability 2217Statement Applying Prior Art in a Request Filed under 35 U.S.C. 302 2218Copies of Prior Art 2219Copy of Printed Patent 2220Certificate of Service 2221Amendments Included in Request Filed under 35 U.S.C. 302 by Patent Owner 2222Address of Patent Owner 2223Withdrawal of Attorney or Agent 2224Correspondence 2225Untimely Paper Filed Prior to Order under 35 U.S.C. 304 2226Initial Processing of Request for Ex Parte Reexamination Filed under 35 U.S.C. 302 2227Incomplete Request for Ex Parte Reexamination Filed under 35 U.S.C. 302 2228[Reserved]2229Notice of Request under 35 U.S.C. 302 for Ex Parte Reexamination in Official Gazette 2230Constructive Notice to Patent Owner 2231Processing of Request Corrections 2232Public Access to Reexaminations Filed under 35 U.S.C. 302 2233Processing in Central Reexamination Unit and Technology Center 2234Entry of Amendments 2235Record Systems 2236Assignment of Reexamination 2237Transfer Procedure 2238Time Reporting 2239Reexamination Ordered at the Director’s Initiative 2240Decision on Request Filed under 35 U.S.C. 302 2241Time for Deciding Request Filed under 35 U.S.C. 302 2242Criteria for Deciding Request Filed under 35 U.S.C. 302 2243Claims Considered in Deciding Request Filed under 35 U.S.C. 302 2244Prior Art on Which the Determination Is Based in Requests Filed under 35 U.S.C. 302 2245Processing of Decision 2246Decision Ordering Reexamination under 35 U.S.C. 304 2247Decision under 35 U.S.C. 303 on Request for Reexamination filed Under 35 U.S.C. 302, Request Denied 2248Petition From Denial of Request Filed Under 35 U.S.C. 302 2249Patent Owner’s Statement in Reexaminations Filed Under 35 U.S.C. 302 2250Amendment by Patent Owner 2251Reply by Third Party Requester 2252Consideration of Statement and Reply 2253Consideration by Examiner 2254Conduct of Ex Parte Reexamination Proceedings 2255Who Reexamines 2256Prior Art Patents and Printed Publications Reviewed by Examiner in Reexamination 2257Listing of Prior Art 2258Scope of Ex Parte Reexamination 2259Res Judicata and Collateral Estoppel in Reexamination Proceedings 2260Office Actions 2261Special Status for Action 2262Form and Content of Office Action 2263Time for Response 2264Mailing of Office Action 2265Extension of Time 2266Responses 2267Handling of Inappropriate or Untimely Filed Papers 2268Petition for Entry of Late Papers for Revival of Reexamination Proceeding 2269Reconsideration 2270Clerical Handling 2271Final Action 2272After Final Practice 2273Appeal in Ex Parte Reexamination 2274Appeal Brief 2275Examiner’s Answer 2276Oral Hearing 2277Board Decision 2278Action Following Decision 2279Appeal to Courts 2280Information Material to Patentability in Reexamination Proceeding Filed under 35 U.S.C. 302 2281Interviews in Ex Parte Reexamination Proceedings 2282Notification of Existence of Prior or Concurrent Proceedings and Decisions Thereon 2283Multiple Copending Ex Parte Reexamination Proceedings 2284Copending Ex Parte Reexamination and Interference Proceedings 2285Copending Ex Parte Reexamination and Reissue Proceedings 2286Ex Parte Reexamination and Litigation Proceedings 2287Conclusion of Ex Parte Reexamination Proceeding 2288Issuance of Ex Parte Reexamination Certificate 2289Reexamination Review 2290Format of Ex Parte Reexamination Certificate 2291Notice of Ex Parte Reexamination Certificate Issuance in Official Gazette 2292Distribution of Certificate 2293Intervening Rights 2294Concluded Reexamination Proceedings 2295Reexamination of a Reexamination 2296USPTO Forms To Be Used In Ex Parte Reexamination