Ch3. Patent Application & Examination — From Specification to Grant

Patent Specification — Required Contents

Specification Required Elements (37 CFR § 1.71 – 1.77):
Title of the invention
Cross-references to related applications
Statement of federally sponsored research (if applicable)
Background of the invention
Brief summary of the invention
Brief description of the drawings
Detailed description of the invention
Claims
Abstract

Claims (35 USC § 112(b)):
Define the legal scope of the patent right
Independent Claims: broadest scope; recite all essential elements
Dependent Claims: narrow the independent claim; add further limitations

Independent Claims:
Written in means-plus-function or step-plus-function format, or in
structural/functional language capturing the core inventive concept

Dependent Claims:
Add additional limitations; provide fallback protection
if broader independent claims are invalidated

Filing Procedure

Application Documents:
Specification · Claims · Drawings (if applicable) · Abstract
Inventor declaration / assignment
Filing fees (varies by entity size: large / small / micro)

Filing Date:
Date USPTO receives a specification and at least one claim
This date is the effective filing date for most priority purposes

Publication (35 USC § 122(b)):
Application published 18 months after earliest effective filing date
(or priority date if a priority claim is made)
Applicant may request early publication
Applicant may opt out of 18-month publication if no foreign filing

Examination:
USPTO non-provisional applications enter the examination queue
Average pendency (first Office Action): 16–24 months (varies by art unit)
No separate examination request needed in the US (vs. 3-year deadline in Korea)

Examination Process

Formal Examination (Pre-Examination):
Check completeness of application; notify of any deficiencies

Substantive Examination:
Prior art search (using USPTO databases, commercial databases)
Analysis of novelty (§ 102), non-obviousness (§ 103), written description,
enablement, and definiteness (§ 112)

Office Action:
Examiner issues written rejection or objection
Applicant has 3 months to respond (extendable to 6 months for a fee)
Response deadline is calculated from the Office Action mailing date

Response Options:
Argument (Amendment): traverse the rejection with legal/technical arguments
Claim Amendment: narrow or clarify claims to overcome rejections
Interview with Examiner: telephonic or in-person discussion (encouraged)

Notice of Allowance:
Examiner finds claims patentable → Notice of Allowance issued
Issue fee paid → Patent grants

Amendment Limitations

New Matter Prohibition (35 USC § 132; MPEP § 706.03(o)):
Amendments may not add new matter not supported by the original disclosure
Applicant is bound by the disclosure at the time of filing

Amendment Timing:
Before first Office Action: amendments generally permitted
After Final Office Action: limited to allowed claims or after-final practice
After Allowance: not permitted (except Rule 312 amendments)

Continuation Applications (35 USC § 120):
File a new application claiming benefit of the parent's filing date
Claims may be broader, narrower, or cover different aspects
Useful for pursuing additional claim scope not obtained in the parent

Divisional Application:
Used when the examiner requires restriction between two distinct inventions
Preserves the filing date of the parent application

Key Concept Cards

Claims = Define the Legal Scope of the Patent ★★★★★ : Independent claims set the broadest scope; dependent claims provide fallbacks. Memory hook: claims = property line

No Separate Examination Request in the US ★★★★★ : Unlike Korea (3-year request deadline), US non-provisionals automatically enter examination. Memory hook: US = automatic exam

Publication = 18 Months from Earliest Filing ★★★★☆ : Application becomes public prior art at 18 months even without a patent grant. Memory hook: publication = 18 months

Practice Questions

Q. Why is broad independent claim drafting strategically important?

A patent’s enforceability is co-extensive with its claims — if a competitor’s product falls outside every independent claim, there is no infringement. Broad independent claims maximize protection: competitors must design further away from the claimed invention. However, overly broad claims risk rejection (prior art) or invalidation. The art of patent drafting lies in writing the broadest claim that clears the prior art, supported by the specification, and that a PHOSITA could not have found obvious. Dependent claims serve as backup if independent claims are invalidated in litigation.

Q. What rights does a patent applicant have before the application publishes?

Before publication (typically 18 months), the application is confidential. No patent rights exist yet. However, if the applicant provides actual notice to a competitor and the competitor continues infringing activity, the applicant may be entitled to reasonable royalty damages from the date of notice if the patent subsequently issues with claims that are substantially identical to those in the published application (35 USC § 154(d) provisional rights). Requesting early publication can accelerate this protection against known infringers.