Ch8. Utility Models, International Patents & PCT — IP Portfolio Strategy

Utility Model Law (Petty Patent / Provisional Patent Analogy)

Utility Model / Petty Patent:
Protects minor improvements to the shape or structure of an article
Lower inventive threshold than a utility patent
(No direct federal equivalent in the US; compare to provisional patent strategy)

US Provisional Application (35 USC § 111(b)):
Establishes a priority date without examination
12-month pendency; must convert to non-provisional within 12 months
Does not mature into a patent on its own

Utility Model vs. Utility Patent:
Utility patent: 20 years from filing; covers methods, compositions, devices
Utility model (Korea/EU): article-only; 10-year term; lower examination standard

Registration without Examination (analogous to US provisional):
No substantive examination at filing
Rights are unstable until confirmed; vulnerability to invalidity challenges

PCT International Filing

PCT (Patent Cooperation Treaty):
Single international application covers all ~157 PCT member states
Administered by WIPO (World Intellectual Property Organization)

PCT Procedure:
International filing → International Search Report (ISR) →
Optional International Preliminary Examination → National Phase Entry

National Phase Entry:
File translations + fees in each designated country
Deadline: 30 months from earliest priority date (most countries)

Key Advantages:
Cost deferral: 30 months to decide which countries to pursue
Prior art assessment: ISR informs patentability before national costs
Fundraising value: PCT filing signals international IP portfolio

Paris Convention Priority:
File in a convention country within 12 months of original filing date
Original filing date recognized as priority date in subsequent countries

Industrial Property Rights — Comparative Table

┌─────────────┬────────────────┬──────────────┬────────────────┬─────────────┐
│ Type        │ Utility Patent │Utility Model │ Trademark      │Design Patent│
├─────────────┼────────────────┼──────────────┼────────────────┼─────────────┤
│ Subject     │Invention(method│ Article only │ Mark/Symbol    │ Ornamental  │
│ Term        │ 20 yrs filing  │ 10 yrs filing│10 yrs+renewals │15 yrs grant │
│ Examination │ Substantive    │ Formal only  │ Substantive    │ Substantive │
└─────────────┴────────────────┴──────────────┴────────────────┴─────────────┘

Copyright vs. Industrial Property Rights

Copyright (17 USC):
Arises automatically at creation; registration not required for protection
(but required for federal infringement lawsuit)
Duration: author's life + 70 years
Protects expression, not ideas (idea-expression dichotomy)

Utility Patent (35 USC):
Registration (grant) essential
Protects technical ideas / inventive concepts

Trademark (15 USC):
Registration strongly recommended; common-law rights exist from use
Renewable indefinitely with continued use

Overlap:
Software: copyright (source code) + patent (algorithm) possible
Product design: design patent + trade dress (Lanham Act) overlap possible

Utility Model = 10 Years; Utility Patent = 20 Years ★★★★★ : Subject matter scope and term differ — article vs. all invention categories. Memory hook: minor improvement = 10 yrs; full invention = 20 yrs

PCT = One Filing → All Member Countries ★★★★★ : International phase followed by national phase entry in chosen countries. Memory hook: PCT = one → many

Paris Convention Priority = 12 Months ★★★★☆ : File in a convention country within 12 months of your first filing to claim priority. Memory hook: Paris = 12 months

Practice Questions

Q. What happens if you miss the PCT national phase deadline?

The standard deadline is 30 months from the earliest priority date (some countries allow more). Missing the deadline in a country means the application is deemed withdrawn there — you lose the right to patent in that jurisdiction. Some countries permit late entry with additional fees. This is why IP portfolio managers meticulously track national phase deadlines across all designated states, often working with local patent agents in each country.

Q. What is the strategic risk of a utility model registered without substantive examination?

Fast registration is the upside — no waiting for examination. The downside is that the rights are inherently unstable: any interested party can file a post-grant invalidity challenge. In litigation, invalidity defenses are very common. Strategically, utility models (or early provisional filings in the US context) are best used as temporary shields while a full utility patent application is being prosecuted, not as a permanent protection strategy.