Study this credential claim-first. Patentability analysis is genuinely demanding because the same fact pattern can engage several statutory tests at once, and the difficulty lies in the concept itself: deciding which test the facts invoke before choosing a response. Work every scenario by decomposing the claim into features, naming the ground — eligibility, novelty, inventive step, support, sufficiency, clarity — and then choosing between argument and amendment. Measure your readiness by whether you can name the test and defend the response, not by hours of reading summaries.
Separating subject-matter eligibility from the other patentability thresholds
Before testing novelty or inventive step, ask whether the claimed subject matter is of a kind patent law protects at all: an artificially created state of affairs of economic significance, rather than a discovery, scheme, or abstract principle.
Work through the claim's substance, not its label. Ask what the claim, read as a whole, produces: a physical transformation or an artificially created state of affairs, and whether that result serves an economically significant use. Contrast a discovery — a law of nature or naturally occurring information as such — with its concrete application. The Australian manner-of-manufacture test sits before the other thresholds in the Patents Act 1990, so an eligibility failure makes novelty analysis moot for that claim.
Train the distinction by rewriting claims. Take an abstract method and add a concrete technical implementation, then ask what changed: the eligibility conclusion, not the wording alone. Compare the two versions feature by feature and observe which feature carries the eligibility argument. A self-check: if you cannot point to the specific feature producing the artificial effect, your eligibility case is built on the category of the claim rather than its substance.
- Eligibility is about the kind of subject matter; novelty and inventive step are about disclosure and obviousness — keep the three questions separate.
- Test eligibility on the claim as a whole, not on a favourite feature selected in isolation.
- A business or professional scheme is assessed on its substance; mere implementation language does not settle it either way.
Novelty versus inventive step: one reference or a mosaic?
Novelty asks whether a single prior-art disclosure contains every feature of the claim. Inventive step asks whether the difference over that disclosure is obvious to a non-inventive skilled addressee given common general knowledge.
Scenario: your claim has features A, B and C. Reference D1 discloses A and B; reference D2 discloses C. The plausible mistake is attacking novelty by combining D1 and D2 — treating two documents as one disclosure. The better decision is to concede novelty over D1 alone and move the fight to inventive step, asking whether combining the references would be obvious or a mere expectation. Why it matters: the wrong test produces the wrong amendment — deleting C 'because it is disclosed' surrenders claim scope for nothing.
Practise this mechanically. Decompose the claim into features, then map each feature to a specific paragraph of a single document before naming the ground. If you need two documents to cover the features, you are in inventive-step territory and must identify what makes the combination obvious: common general knowledge, or a further document used only through the obviousness lens. Amendments cannot add matter beyond the original filing, so naming the correct ground early preserves amendment options you would otherwise burn.
Support versus insufficiency: two description objections that fail differently
Lack of support compares the claim's width with the matter the description discloses. Insufficiency asks whether the skilled addressee can produce the invention across the full claimed scope using the description and common general knowledge.
Scenario: the description enables one species of a genus — a process working only with a particular class of catalyst — while the claim covers all catalysts. The plausible mistake is calling this 'fair basis', the superseded pre-reform label, and arguing the inventive concept is catalyst-independent when the real question is support: does the description disclose matter spanning the genus? The better decision is to narrow to the described class or point to a disclosed principle covering the whole genus. Mislabelled grounds produce arguments answering the wrong question.
Distinguish the two tests with separate probes. For support, ask whether the claim extends beyond the technical contribution the description actually discloses — and whether the description genuinely teaches a genus-spanning principle if you rely on one. For sufficiency, ask whether the skilled person can work the claim across its whole scope, not merely at one point. The grounds can diverge — a claim may be supported yet insufficient, or the reverse — and narrowing usually cures both, but naming the correct test tells you whether argument alone could ever succeed.
Matching each examination objection to the right repair: argue or amend
Each objection type points to a different repair. Clarity is fixed by rewording, novelty by differentiating or deleting features, and support objections by narrowing to what the description actually discloses.
Use the table below as a decision aid when triaging an examination report. Before drafting any response, write one sentence naming the ground and the test behind it, then choose the repair lever. Remember the amendment constraints: amendments must not add subject matter beyond the originally filed disclosure, and they cannot rescue a claim by importing new matter to paper over a support gap. Arguing is cheaper only when the description genuinely supports the argument.
Exercise: take a short mock report raising three objection types and draft two alternative responses — one by argument, one by amendment. Expected observations: argument-only responses to support objections tend to restate the claim rather than point to described matter; amendment responses to clarity objections often go further than needed and introduce new ambiguity. Compare your drafts against a colleague's and debate the levers chosen rather than the wording.
| Objection type | What it tests | Question to ask | Primary repair lever |
|---|---|---|---|
| Lack of novelty | One prior-art document vs all claim features | Which single reference misses which feature? | Differentiate a feature or accept the reference and re-scope |
| Lack of inventive step | Difference over the art vs skilled addressee's knowledge | Why would combining these be more than an expectation? | Argue from the description's technical contribution or narrow |
| Claim not clear | Definite scope to the skilled reader | Could two skilled readers construe this differently? | Reword; avoid new ambiguity |
| Lack of support | Claim scope vs matter disclosed in the description | Does the claim extend beyond the disclosed contribution? | Narrow to described matter or point to the disclosed principle |
| Insufficiency | Ability to work the invention across the scope | Can the skilled person perform the claim everywhere? | Narrow to enabled subject matter |
Prosecution timelines: build each deadline from its triggering event
Construct timelines from named triggering events rather than recall. Filing or priority dates start convention periods; examination report dates start response windows; and extendability differs between period types under the regulations.
Exercise: build a docketing timeline for one mock filing — a first filing, a convention-claiming later filing inside the priority year, and a PCT route where national phase entry is the operative event in each designated country. Label every deadline with its trigger. Expected observations: the priority year runs from the first filing, not the PCT filing; response windows run from the report's date; and extension availability is a property of the period type. These numbers are exercise scaffolding — confirm current periods from the regulations and the Office's published guidance.
Self-check rubric for this exercise: (1) you can name the triggering event for every deadline without notes; (2) you can say which periods run from filing versus from an Office action; (3) you can identify which periods typically need an extension request and which do not; (4) you verify dates on the register rather than assuming a date from correspondence. Treat these as learning milestones for your own study, not as a prediction of exam performance.
Ethics scenarios: duties to the client against candour to the Office
Ethics questions test the collision between client advocacy and candour to the Patent Office, plus conflict management and confidentiality. Decide which duty governs the specific conduct described, then choose the response a registered attorney could defend.
Scenario: a client asks you to characterise prior art in terms you know misstate the document. The plausible mistake is treating all advocacy as legitimate silence or spin. The better decision is to reframe: you may present selective arguments, but you must not make statements you know to be misleading. Why it matters: the conduct rules for registered patent and trade marks attorneys treat misleading the Office as a professional conduct issue, distinct from a losing argument — and the client's instruction does not launder it.
Work a second pattern: two companies in the same technology space both approach your firm around the same time — one for validity opinions, one for drafting and prosecution. Before taking instructions, run the conflict analysis against the firm's own knowledge, not just a name search. As a study habit, state your conclusion in one sentence: who is the client, what duty is engaged, and what specific step resolves it — decline, screen, or proceed. Rehearsing that precision keeps your reasoning decision-shaped rather than a recitation of rule categories.
Priority routes and challenge mechanisms: choosing the right procedural path
Route choices determine rights. Direct convention filings preserve priority jurisdiction by jurisdiction; the PCT defers national-phase costs; opposition runs before grant after acceptance, while re-examination and court revocation operate against granted patents.
Compare the two international routes before deciding. The Paris Convention route suits a small, known set of countries and preserves the priority-year claim by claim; the PCT route suits uncertain commercialisation plans because a single international application defers national decisions. Neither route creates an international patent — rights still arise nationally. For challenges, keep the forums and timing straight: opposition to a proposed grant must be filed within the window after acceptance, whereas re-examination and revocation proceedings target granted patents in different forums with different scopes and consequences.
Readiness checks before you finish: you can decompose any claim into features and name the statutory test a fact pattern engages; you can state which single reference carries a novelty attack; you can distinguish support from insufficiency in one sentence each; you can build a docket timeline from triggering events; and you can pick argue-versus-amend with a stated reason. Administrative matters — current formats, rules and scheduling for the examination — are published by the Professional Standards Board; check there rather than relying on third-party summaries.
| Decision | Convention route | PCT route |
|---|---|---|
| Where rights arise | Each designated country, via direct filings | Each designated country, via national phase entry |
| Best suited to | A small, settled list of target countries | Uncertain markets where more decision time is valuable |
| Timing pressure | All foreign filings within the priority year | National decisions deferred to the national phase |
| Common confusion | Assuming priority survives missing a jurisdiction | Treating the international phase as a granted patent |
References and further reading
Use these references to explore the concepts and check the latest information from the relevant organizations.