Global patent prosecution reference

Patent Office Rejection Grounds Across Major Jurisdictions

Compare common rejection and objection grounds from CNIPA, USPTO, EPO, JPO, KIPO, TIPO and IP Australia, and understand how patent professionals structure office action responses.

CNIPA USPTO EPO JPO KIPO TIPO IP Australia

Comparison

Global comparison of common rejection grounds

Terminology and statutory structure differ by jurisdiction. The table below uses concise reference language and common practice groupings for office action response planning.

Patent Office Local Document Term Common Legal Grounds Main Objection Types Response Focus
CNIPA Office Action / 审查意见通知书 Patent Law Arts. 2, 5, 9, 22, 25, 26, 31, 33 Subject matter, novelty, inventiveness, practical applicability, clarity, support, unity, added matter Map each objection to cited claim features, identify amendment basis, and build arguments around technical contribution and claim support.
USPTO Office Action 35 U.S.C. §§ 101, 102, 103, 112; double patenting Eligibility, novelty, obviousness, written description, enablement, definiteness Separate claim construction, prior-art mapping, eligibility reasoning, and amendment strategy; preserve attorney review of every argument.
EPO Communication / Examination Report EPC Arts. 52, 53, 54, 56, 57, 82, 83, 84, 123(2) Patentability, novelty, inventive step, industrial applicability, unity, sufficiency, clarity, added matter Use problem-solution analysis, verify basis for amendments, and keep technical-effect reasoning explicit.
JPO Notice of Reasons for Refusal / 拒絶理由通知 Patent Act Arts. 29, 29bis, 32, 36, 37, 39, 17bis Novelty, inventive step, description requirements, unity, first-to-file, amendment restrictions Connect claim amendments to the original disclosure and respond to each refusal reason with concise technical and legal reasoning.
KIPO Notice of Grounds for Rejection Patent Act Arts. 29, 32, 36, 42, 45, 47 Industrial applicability, novelty, inventive step, clarity or support, unity, amendment issues Align response arguments with cited prior art, claim support, and amendment permissibility.
TIPO Office Action / Examination Opinion Patent Act Arts. 21, 22, 23, 24, 26, 31, 33, 43 Invention definition, industrial applicability, novelty, inventive step, unpatentable subject matter, disclosure, unity, amendments Address patentability and disclosure issues with a clear claim-feature comparison and explicit amendment basis.
IP Australia Examination Report Patents Act 1990 ss. 18, 40, 50 Manner of manufacture, novelty, inventive step, usefulness, support, clarity, disclosure, amendment issues Show the technical contribution, resolve support and clarity objections, and ensure amendments remain within allowable scope.

Office-by-office notes

How response focus changes by patent office

CNIPA

CNIPA Office Action Rejections

CNIPA office actions commonly group objections around patentable subject matter, novelty, inventiveness, practical applicability, support, clarity, unity, and amendment basis. Commonly cited provisions include Patent Law Arts. 2, 5, 9, 22, 25, 26, 31, and 33.

A strong response usually separates legal basis from technical comparison: identify which claim feature is challenged, locate the support in the original application, and explain why the claimed technical solution is new and inventive over the cited reference.

PATPILOT helps organize the office action, cited references, claim-feature mapping, amendment basis, and draft response reasoning for professional review.

USPTO

USPTO Office Action Rejections

USPTO rejections often cite 35 U.S.C. §§ 101, 102, 103, and 112. These correspond to subject matter eligibility and utility, novelty, non-obviousness, and disclosure or claim-definiteness issues.

Responses should avoid mixing issues. A 103 rejection needs a different structure from a 112 rejection: prior-art mapping and motivation reasoning for obviousness, and specification support or claim precision for written description, enablement, or definiteness.

PATPILOT helps compare claim limitations with cited passages, separate rejection types, and generate reviewable argument drafts while preserving attorney judgment.

EPO

EPO Examination Report Objections

EPO examination communications commonly involve EPC Arts. 52, 53, 54, 56, 57, 82, 83, 84, and 123(2). These cover patentability, exclusions, novelty, inventive step, industrial applicability, unity, sufficiency, clarity, and added matter.

Inventive step responses often need a problem-solution structure: closest prior art, distinguishing features, objective technical problem, and why the claimed solution would not have been obvious to the skilled person.

PATPILOT helps build a structured comparison and keeps amendment basis and technical-effect reasoning visible for review.

JPO

JPO Reasons for Refusal / 拒絶理由通知

A JPO notice of reasons for refusal, or 拒絶理由通知, may refer to novelty, inventive step, description requirements, unity, first-to-file, and amendment restrictions. Commonly cited provisions include Patent Act Arts. 29, 29bis, 32, 36, 37, 39, and 17bis.

Effective responses tend to be concise and tied closely to the examiner's stated reasons. Amendments should be traced to the original disclosure, and arguments should explain the technical difference from the cited prior art.

PATPILOT helps translate the refusal logic into a claim-feature comparison and a reviewable response outline.

KIPO

KIPO Notice of Grounds for Rejection

KIPO rejection grounds commonly involve patentability requirements, novelty, inventive step, disclosure, claim clarity or support, unity, and amendment limits. Commonly cited provisions include Patent Act Arts. 29, 32, 36, 42, 45, and 47.

A response should identify the examiner's technical finding, the claim language at issue, and the disclosure basis for any amendment. For prior-art objections, the analysis should distinguish the claimed technical feature from the cited reference.

PATPILOT helps keep the cited passages, claim features, and proposed amendments aligned in one structured workspace.

TIPO

TIPO Patent Examination Objections

TIPO examination opinions commonly involve invention definition, industrial applicability, novelty, inventive step, unpatentable subject matter, disclosure requirements, unity, and amendment scope. Commonly cited provisions include Patent Act Arts. 21, 22, 23, 24, 26, 31, 33, and 43.

Responses should show how the claim satisfies patentability requirements and where amended features are supported. Prior-art responses benefit from a clear mapping between claim elements and the cited disclosure.

PATPILOT helps produce a professional working record for review: issue extraction, feature comparison, amendment basis, and draft arguments.

AU

IP Australia Examination Reports

IP Australia examination reports often involve the Patents Act 1990, including ss. 18, 40, and 50. Issues may include manner of manufacture, novelty, inventive step, usefulness, support, clarity, disclosure, and amendment scope.

A response should explain the technical contribution, resolve claim support or clarity objections, and ensure any amendments remain permissible. The reasoning should be clear enough for the examiner to connect each response point to the cited objection.

PATPILOT helps align examination issues, prior-art analysis, and draft amendments before professional review.

Issue map

Common rejection types across jurisdictions

Patent eligibility / patentable subject matter

Whether the claimed subject matter can be protected under the relevant patent statute or convention.

Novelty

Whether every element of the claimed invention is disclosed in the prior art.

Inventive step / non-obviousness

Whether the claimed invention would have been obvious or readily derived from the prior art.

Sufficiency / enablement

Whether the application teaches a skilled person how to carry out the invention.

Clarity / definiteness

Whether the claims define the invention clearly enough for examination and later enforcement.

Support / written description

Whether claim scope is supported by the application as filed.

Unity

Whether the application claims one general inventive concept or improperly combines multiple inventions.

Added matter / amendment scope

Whether amendments introduce subject matter beyond the original disclosure.

FAQ

Office action response questions

What is an office action response?

An office action response is a written reply to objections or rejections raised by a patent office during examination. It may include legal arguments, technical explanations, claim amendments, and supporting remarks.

What are the most common patent office rejection grounds?

Common grounds include patent eligibility or patentable subject matter, novelty, inventive step or non-obviousness, sufficiency or enablement, clarity or definiteness, support or written description, unity, and added matter.

How does a USPTO 103 rejection differ from an EPO inventive step objection?

A USPTO 103 rejection focuses on non-obviousness under U.S. law. An EPO inventive step objection is usually analyzed through the problem-solution approach, with attention to closest prior art, objective technical problem, and technical effect.

What is a JPO refusal reason notice?

A JPO notice of reasons for refusal, or 拒絶理由通知, explains why the examiner considers an application not ready for grant and gives the applicant an opportunity to submit arguments or amendments.

What should a response to a novelty rejection include?

It should identify the cited disclosure, map it against each claim feature, and explain which required feature is not disclosed or why the examiner's interpretation should be revised.

Can AI help draft an office action response?

AI can help organize office action issues, compare claim features with cited references, and prepare reviewable draft arguments. Professional review by qualified patent practitioners remains essential.

Does PATPILOT replace a patent attorney?

No. PATPILOT is designed as an AI co-pilot for patent professionals. It helps with analysis, comparison, strategy preparation, and draft generation, but legal judgment and filing decisions should remain with qualified professionals.

References

Source starting points

Patent statutes and examination practice change over time. Use official patent office and statute sources for case-specific work.

Informational use only.

This page is for general informational purposes only and does not constitute legal advice. Patent prosecution strategy should be reviewed by qualified patent professionals in the relevant jurisdiction.

Reviewable AI workflow

Turn office action issues into structured response work

PATPILOT helps IP teams parse objections, compare claim features, prepare response strategy, and generate reviewable draft documents.