Study Guide

弁理士 口述試験: Turning Legal Knowledge into Spoken Answers

A study approach for the oral stage of the Japanese patent attorney examination built around spoken legal register, paired-concept contrasts, element-by-element infringement reasoning, and recorded mock drills with a rubric.

Updated September 202610 min readStudy GuidePatent Practitioner Prep
Evelyn Ford

Evelyn Ford

Patent Practitioner Prep Editorial Team

Preparation sequence: (1) rebuild one-line definitions of each core requirement; (2) drill paired-concept contrasts aloud; (3) practice hypotheticals with element-by-element comparison; (4) run follow-up question drills; (5) review attorney conduct rules; (6) score every recorded answer against a fixed rubric. Administrative matters such as scheduling belong to the Japan Patent Office examination pages.

Why Your Written Notes Collapse When Spoken Aloud

The oral stage turns silent recall into real-time spoken reasoning. Notes organized by article number do not supply the spoken skeleton an answer needs: a definition, a distinguishing line against a neighboring concept, and one application sentence.

Written preparation stores knowledge in the order the statutes present it, but a spoken answer must retrieve ideas in the order the question demands. Build a spoken skeleton for every core concept: name the requirement, state its one-sentence content, contrast it with the concept most often placed beside it, and close by answering the exact question asked. Convert your written summaries into these skeletons before drilling them aloud.

The second problem is register. Terms such as 特許請求の範囲, 明細書, 先使用権, and 周知 must be produced exactly, spoken, under time pressure. Casual paraphrases that would pass in writing, such as describing a claimed invention as simply 'new', lose the statutory distinction the answer depends on. Drill the exact terminology aloud in short sentences until the precise form is the one that comes out first, not the everyday word.

Novelty and Inventive Step: Different Comparison Units, Different Questions

Novelty asks whether the identical invention was already disclosed; inventive step asks whether a person skilled in the art could easily make it from cited prior art. Answering one with the logic of the other breaks your structure.

Scenario: the question asks you to explain the difference between 新規性 and 進歩性. A common mistake is to recite the statutory texts of both provisions in one continuous flow, using 'easy to make' language while still on novelty. When the follow-up arrives — which cited document applies to which requirement — the candidate stalls, because the two analyses were never separated. The better decision is a two-step spoken skeleton: first, novelty compares the claimed invention against individually disclosed prior art and asks whether the identical invention exists; second, inventive step assesses whether a person skilled in the art would easily arrive at the claimed invention from the cited inventions. It matters because the two requirements use different comparison units and different assessed persons, and only the separated version lets you handle follow-ups.

Make the separation audible in your phrasing. Say '新規性については' before the first analysis and '進歩性については' before the second, so the examiner hears the boundary. Practice with a citation set that includes one identical disclosure and one related-but-different disclosure, and state explicitly which document you are using for which requirement. If a single document both discloses something identical and suggests more, say so explicitly rather than letting the two analyses blur together.

The table below fixes the contrast you should be able to produce from memory.

Point of comparisonNovelty (新規性)Inventive step (進歩性)
Core questionWas this identical invention already disclosed?Could a skilled person easily make it from the cited prior art?
Comparison unitClaimed invention vs. each prior disclosureClaimed invention vs. cited invention(s) combined in reasoning
Assessed personNot framed around a hypothetical personPerson skilled in the art (当業者)
If prior art differs from the claimNot a novelty rejectionThis is where the inventive step analysis begins
Typical follow-up to rehearseWhich disclosure defeats novelty?What distinguishes the invention, and why is it not obvious?

Answering Patentability Questions Across the Whole Statutory Frame

A question about patentability expects the full frame, not just novelty: the definition of an invention, industrial applicability, the description requirements of enablement and clarity, and then novelty and inventive step as separate gates.

Rehearse the sequence as spoken signposts: first that a 特許法上の発明 is a highly advanced creation of technical ideas using the laws of nature; then industrial applicability; then the description requirements — that the 明細書 enable a skilled person to work the invention and that claims be clear and supported; and only then novelty and inventive step. Keeping enablement and clarity distinct in speech is itself a testable skill: enablement concerns whether the skilled person can work the invention from the description, while clarity concerns whether the claim defines the invention precisely.

Apply the frame to modern subject matter. Software-related and business-method inventions are treated as patentable only insofar as they constitute creations of technical ideas using the laws of nature, a framing the Japan Patent Office materials discuss for such inventions. In a drill, take a claimed information-processing method and produce the spoken chain: identify the technical means, link it to a technical effect, then run the novelty and inventive step analyses in order. If you cannot articulate the technical character in one sentence, that is the point your answer would lose coherence, and the drill has told you so.

The exercise later in this guide shows how to score whether your frame came through completely.

Infringement Questions: Walk the Elements Before Reaching Equivalents

Compare the accused product against the claimed elements one by one before any conclusion. Reach equivalents only when an element is literally absent, and state the reasoning so the examiner can follow each step.

Scenario: a hypothetical product lacks one element of the claimed invention, and the question asks whether the patent right covers it. A common mistake is to answer 'no infringement' immediately, or to jump straight to the doctrine of equivalents without the literal comparison. The better decision is to name the elements of the claimed invention from the 特許請求の範囲, compare the product against each element in turn, observe that the claims are construed to include the equivalent only in defined circumstances, and then address whether equivalence could apply to the missing element — noting that the reasoning conditions must be articulated, not asserted. It matters because the element-by-element order is what makes the conclusion verifiable; a bare conclusion gives the examiner nothing to follow and nothing to accept.

Distinguish the neighboring concepts so you can deploy the right one. 先使用権 is a defense available to a person who, in good faith, was working the invention or making preparations for it in Japan before the filing, and it belongs in the answer only when the facts describe pre-filing activity. Injunction and damages are separate remedies with separate preconditions. In drills, practice one hypothetical where the defense applies and one where it does not, and state in each which facts triggered or defeated the defense — that articulation, not the label, is the substance of the answer.

Handling Follow-Up Questions Without Losing Your Structure

A follow-up tests whether you can zoom into one part of your skeleton and return. Answer the narrow point first, then bridge back with one sentence that restores your original structure.

Technique: when a follow-up arrives, restate its scope in one sentence — 'the question is whether this document destroys novelty' — answer it, and bridge back: 'returning to the inventive step analysis…'. This keeps the examiner anchored to your structure instead of replacing it. When you genuinely do not recall a point, naming the legal frame you would apply and what you would need to check is a coherent spoken answer; abandoning the frame to improvise is not.

Watch two traps. Over-answering: adding every related concept you know dilutes the point and invites follow-ups you have not organized. Freezing on one term: if you forget a term mid-answer, define what you mean in plain words and keep the reasoning moving rather than stopping the whole answer to recover a label. Drill both by recording answers and marking every place where a follow-up or a forgotten term derailed the skeleton; each marked derailment becomes the target of the next drill.

Keeping Design and Trademark Law Out of Patent Framings

Patent logic — technical ideas judged for novelty and inventive step — does not transfer to designs, which protect creations of shape, pattern, or color perceived aesthetically, or to trademarks, which protect signs indicating source.

Mini scenario: asked to explain the requirements for design registration, a candidate begins analyzing 'inventiveness' of the design. That imports the patent frame wholesale. The better decision is to anchor in the Design Act's own framing: an article's shape, pattern, or color, or combinations, perceived through the sense of sight and creating an aesthetic impression, judged for its own registration requirements — including novelty of the design — rather than technical effect. The distinction matters because each right protects a different object, and the examiner can hear immediately whether your frame matches the object.

Trademarks deserve the same discipline: the object is a sign used to distinguish one's goods or services from others, assessed through functions such as source indication, not technical merit. Build contrast drills that force the separation — take one fact pattern and state which law governs and why, then articulate that law's own requirements. These contrasts also reinforce the procedural topics: opposition and invalidation systems exist across patent, design, and trademark rights, but as distinct systems under each statute, so name the statute whenever you describe the procedure.

A Recorded Drill Cycle with a Self-Check Rubric

Rotate three drill types — paired-concept contrast, hypothetical application, follow-up response — and score every recorded answer against a fixed rubric, letting the rubric, not memory of how fluent you felt, decide what to rehearse next.

Suggested cycle: in one session, record a two-minute contrast of a concept pair (novelty vs. inventive step; enablement vs. clarity; patent vs. design vs. trademark object), then a hypothetical answered element by element, then a replay where a partner or self-imposed voice asks two follow-ups. Score each recording on the rubric below. Scores are learning milestones for your preparation — they measure whether your spoken skeleton is forming, not any exam outcome.

Readiness checks before you consider the cycle complete: you can produce the novelty/inventive step contrast in under two minutes without conflating the comparison units; you can walk a hypothetical through all claimed elements aloud before mentioning any remedy or defense; you can state the object of each of the three rights in one sentence each; and your recordings show the same legal register from first sentence to last. Whatever remains unmet is your next session's material — the rubric makes the gap visible instead of leaving it to impression.

One short note for administrative matters such as schedules and procedures: consult the Japan Patent Office examination pages directly rather than relying on summaries.

  • Rubric line 1 — Frame: the answer opens by naming the requirement or statute it is operating under.
  • Rubric line 2 — Contrast: paired concepts are separated with a spoken boundary phrase, and each gets its own comparison unit.
  • Rubric line 3 — Application: a hypothetical is worked element by element, or the requirements are run in statutory order, before any conclusion.
  • Rubric line 4 — Recovery: follow-ups are answered and the structure is restored with a bridge sentence; forgotten terms are paraphrased without stopping.
  • Rubric line 5 — Register: exact statutory terminology is used throughout, with no casual paraphrase of a legal term of art.
  • Exercise: record the novelty/inventive step contrast, an element-by-element infringement hypothetical, and a design-vs-patent framing answer; score each recording 0–2 per line, and expect a total of 8 or higher as a workable milestone.

References and further reading

Use these references to explore the concepts and check the latest information from the relevant organizations.

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FAQ

Frequently Asked Questions

Practical answers to help you apply the guidance for 弁理士試験 - 口述試験.

Do my written-exam study materials transfer directly to the oral stage?
The legal content transfers, but the organization does not. Written materials are ordered by article; spoken answers must be ordered by question. Rebuild your core concepts as spoken skeletons — definition, contrast, application — before treating written preparation as oral readiness.
How should I practice speaking legal Japanese if I have no study partner?
Record yourself against timed prompts and score the recordings on the five-line rubric in this guide. Listening back exposes register slips, collapsed structures, and abandoned skeletons that feel invisible while speaking. A partner mainly adds unpredictable follow-ups, which you can simulate by writing follow-up prompts in advance.
What should I do if I cannot remember a statutory term or article number mid-answer?
Define the concept in plain words and continue the reasoning rather than stopping to recover the label. Naming the legal frame you are operating under and what the concept does is a coherent spoken answer; a long silence while searching for a term is not, and the reasoning you preserve matters more than the recovered citation.
How deeply do I need the Design Act and Trademark Act compared with the Patent Act?
Treat them as distinct subjects with their own objects and requirements, not as footnotes to patent law. Drill one-sentence statements of each right's protected object and a contrast exercise showing why patent framing does not fit designs or trademarks, plus the procedural systems specific to each statute.

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