Practical Problems in Japan Entry and How We Address Them
Before you abandon protection in Japan or substantially narrow the claims, consider the options available. These hypothetical examples explain responses to missed deadlines, pre-filing disclosure, translation issues, and Japanese claim and examination requirements.
01
Translation Not Ready Near the Deadline
An unfinished translation does not necessarily prevent entry.
Illustrative situation
Instructions arrive only days before the entry deadline, but no Japanese translation is ready and the application is lengthy.
Filing and Translation
Dates and deadlinesOur review starts with the earliest priority date and international filing date shown in the records. We track the entry and examination-request deadlines separately.
Filing optionsThe national phase entry form can sometimes be filed before the translation. If it is filed in the final two months of the 30-month period, the translation may follow within two months of that filing.
Translation scheduleWe agree on a workable translation and filing schedule with you, based on the source documents and amendments. For an existing translation, the review establishes which version will be used and what further work is needed.
Our first priority is timely filing rather than reliance on restoration. The application number and available documents allow us to assess the next steps promptly.
02
Resolving Source-Text Inconsistencies Before Filing in Japan
The JPO applies strict clarity and support requirements.
Inconsistent terms or unclear references can obscure what is claimed and how the description supports it, leading to objections. These issues in the source need attention during preparation of the Japanese translation and the pre-filing check.
Illustrative situation
The source claim introduces “a control unit” but later uses “a unit” or “the unit,” leaving it unclear whether the same element or a different one is intended. The embodiments also describe circuitry without clearly linking it to the claim wording.
Translation Preparation and the Pre-Filing Check
Source-text inconsistenciesOur analysis compares the claims, description, and drawings to identify missing functional words and inconsistent terminology in the source. Where the application as a whole establishes that the same element is intended, the Japanese wording makes that relationship clear.
First and later referencesFirst introductions and subsequent references are traced through the source, including its use of “a” and “the.” We use wording such as “前記制御部” (the previously recited control unit) to clarify the relationship where supported, and resolve unclear intent with you before finalizing the Japanese text.
Claims and embodimentsWe map claim terms to the components, functions, and reference signs disclosed in the embodiments. Inconsistencies are addressed during preparation of the Japanese translation and the pre-filing check, with clarifying amendments where needed and based on the original disclosure.
Addressing source-text inconsistencies is part of preparing the Japanese filing. The aim is to make the intended claim features and their relationship to the embodiments clear for Japanese examination.
03
Multi-Multi Dependent Claims
Useful claim combinations can be lost when a dependency is simply deleted.
Illustrative claim dependencies
Claim 4Refers to any of claims 1–3
→
Claim 3Refers to claim 1 or 2
Claim 4 refers to another multiple dependent claim.
Illustrative situation
Claim 3 refers alternatively to claim 1 or 2, and claim 4 refers alternatively to any of claims 1–3. Claim 4 therefore refers to another multiple dependent claim.
Restructuring the Claims
Claim dependenciesOur dependency review identifies both the prohibited references and the technical combinations worth preserving. Multiple dependent claims are not prohibited as a category.
Alternative structuresThe available options include restructuring references, using single dependencies, and splitting claims. Simply deleting a reference may sacrifice useful claim combinations.
Support and feesWe assess the amended claims against the original disclosure and explain any effect of an increased claim count on examination-request fees.
For PCT applications, the restriction applies to international applications filed on or after April 1, 2022.
04
A Missed National Phase Entry or Examination-Request Deadline
Restoration may be available, subject to eligibility and strict time limits.
Illustrative situation
Entry into the Japanese national phase was overlooked, or a missed translation or examination-request deadline has been discovered.
Assessing Restoration
Missed procedureA restoration assessment starts with the filing and payment records, the omitted procedure, its original deadline, and the date on which the procedure became possible. National phase entry and examination-request relief are assessed separately to establish whether the restoration request period remains open.
Eligibility for restorationFor eligible procedural deadlines missed on or after April 1, 2023, the applicable standard is that the failure was unintentional. Our assessment draws on instructions, correspondence, and the circumstances in which the missed deadline was discovered to establish eligibility and the explanation needed.
Statement and filingThe statement of reasons for restoration explains the failure, when the procedure became possible, and why the omission was unintentional. Where restoration is pursued, we complete the omitted translation filing or examination request, submit the statement, and arrange payment of the required fees within the applicable periods.
The relevant relief generally requires action within two months of the date on which the procedure became possible and within one year of the original deadline. Restoration following a missed translation deadline does not automatically extend the examination-request deadline. Relief is not automatic; contact us as soon as the omission is discovered.
05
Assessing Foreign Prosecution Across Languages
Our multilingual team assesses technical arguments in foreign prosecution records.
Office Actions, responses, and claim amendments
Original prosecution recordsEnglish, German, French, Chinese, and Korean
→
Japanese responseTechnical reasoning and claim changes evaluated for Japan
Illustrative situation
A German- or Chinese-language Office Action and response contain a technical distinction that an English summary does not fully explain. The amended claims show how that distinction was reflected in the claim wording.
Evaluating the Original Records
Multilingual analysisWe analyze foreign Office Actions, responses, amended claims, and cited references in their original language. We identify the technical distinctions, reasoning, and claim changes behind the examiner’s conclusions, rather than relying solely on a brief English summary.
Japanese examinationJapan has a substantial body of Japanese-language patent literature accumulated over many years. References not identified in searches elsewhere may be cited during Japanese examination. We consider those references and Japanese clarity and support requirements when recommending appropriate voluntary amendments before examination.
A focused responseFor a Japanese Office Action, we assess the examiner’s reasoning alongside the foreign prosecution history. We develop specific arguments on claim differences, the reasoning for combining references, and technical effects, and discuss amendments that preserve commercially important scope. An unfavorable written opinion of the International Searching Authority or a foreign objection does not determine the Japanese outcome.
By combining multilingual review with experience in Japanese patent practice, we develop arguments and amendments that advance the application toward grant.
06
Pre-Filing Disclosure and Protection in Japan
The priority deadline and Japan’s novelty grace period are separate questions.
Illustrative case · time since disclosure
DisclosureMonth 0
First national filingMonth 2
PCT filingMonth 14
Illustrative situation
An invention is disclosed, a first national application is filed two months later, and a PCT application follows twelve months after that. Fourteen months have elapsed since disclosure.
Disclosure and Filing Dates
Disclosure timelineOur review compares the disclosure date, content, and disclosing party with the first national and international filing dates. For an ordinary foreign-priority PCT application, Japan’s one-year grace period generally runs from disclosure to the international filing date; filing the first national application within a year is not enough by itself.
Evidence and proceduresFor matters that may qualify, we establish how the disclosure relates to the claimed invention and prepare evidence of its date and content. The filing plan covers Japan’s statement and evidence deadlines and the required procedures.
Undisclosed featuresIf the exception may not apply, our review also considers technical features or improvements that were absent from the disclosure. We explain what was disclosed and what may still merit consideration for protection.
By national phase entry, the period measured to the international filing date may already have expired. An international-phase declaration does not remove the need to check Japan’s evidence requirements.
07
How Can You Further Reduce the Cost of Obtaining a Patent in Japan?
Consider examination fee reductions alongside preparation before examination.
Foreign applicants can also qualify for examination fee reductions
SMEs, individuals, and universities that meet the applicable requirements may qualify for a reduction or exemption of JPO examination fees. Qualifying SMEs pay 1/2 of the standard fee; qualifying small enterprises and SME startups pay 1/3.
Qualifying SMEs1/2
Qualifying small enterprises and SME startups1/3
These fractions show the portion of the standard JPO examination fee payable after reduction.
We are familiar with the eligibility rules and application procedures for fee reductions. We check the available options and handle the application so that an overlooked reduction does not lead to unnecessary official fee costs.
Provide the WO or PCT number and applicant’s name through our inquiry form. We will review the applicable category and explain the reduced fee and necessary steps for your case.
We check the business sector, capital, employee count, establishment date, and control by large companies. For individuals, income and other applicable conditions are checked; for universities, the status of the institution or researcher is relevant. Joint applications require a separate calculation based on each applicant’s eligibility and share. The reduction must be requested when requesting examination; it cannot be claimed retroactively afterward.
Review claims before examination while preserving useful protection
The examination fee depends on the number of claims. We review duplication, business priorities, and Japanese claim dependency rules, and discuss a suitable claim structure. Cost alone should not drive the deletion of commercially important claims.
Address foreseeable disclosure issues before filing
We check inconsistent source terminology, omitted descriptions of components, and the relationship between claims and embodiments. Preparing the Japanese documents with clarity and support requirements in mind can help reduce avoidable objections and additional response costs.
Program details and official JPO guidance
Some SME categories are subject to a limit of 180 applications per Japanese fiscal year. Small enterprises, SME startups, and universities are among the categories excluded from this limit. The reduction concerns JPO official fees; related professional fees are quoted separately.
General information, reviewed October 15, 2026. Procedures and fees depend on the application and may change. We confirm the current position before accepting filing instructions. JPO: national phase · JPO: fees · WIPO
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