KIPO Patent Drawing Requirements: Complete Guide for Korean Application Filings

KIPO patent drawing requirements set formal, technical, and formatting rules for Korea patent figures submitted to the Korean Intellectual Property Office. Adhering to KIPO drawing standards prevents office actions and speeds up review of your Korean filing drawings.

Core KIPO Drawing Standards You Must Meet First

All Korean filing drawings must follow baseline formatting rules to pass initial KIPO administrative review. First, use only A4-sized paper or digital A4 dimensions, with no trimmed or custom sizes allowed. Margins are strictly enforced: 2.5cm for top and left edges, 2cm for the bottom edge, and 1.5cm for the right edge. No reference numbers, labels, or figure content may fall inside these margin areas.

Line quality requirements mandate solid, uniform black lines with no faint strokes, smudges, or grayscale shading unless explicitly pre-approved by KIPO. Color drawings are only permitted for specific use cases, such as illustrating biological samples or chemical compounds that cannot be clearly shown with black and white art, and require a written pre-submission request. All Korea patent figures must use consistent reference numbering: the same numerical label must apply to the same component across every drawing, with labels sized at least 5mm tall for readability.

Step-by-Step Workflow to Prepare Compliant Korean Filing Drawings

1. Draft initial drawings aligned with your invention disclosure, prioritizing clear illustrations of all novel, claimed features over decorative or trivial details.
2. Adjust formatting to match KIPO margin, size, and line weight rules: use a minimum 0.3mm line weight for main components, and 0.1mm for fine details like texture or small mechanical parts.
3. Add consistent reference numbering, ensuring every claimed element is labeled at least once across your Korea patent figures, with lead lines connecting labels to the correct component with no overlapping lines or text.
4. Run a pre-submission check against official KIPO guidelines to flag missing labels, low-resolution elements, or formatting errors that could trigger an office action.
5. If using AI tools like PatentDraw to generate initial drafts, conduct a full human technical and professional review to confirm accuracy and alignment with KIPO drawing standards before submission, as AI output is only a working draft.

Concrete Example of a Compliant KIPO Drawing Set

For a utility patent application for a foldable reusable coffee cup, a compliant drawing set would include three core figures, each on a separate A4 digital sheet. Fig. 1 shows a perspective view of the cup in its open, usable position, Fig. 2 shows a side elevation view of the cup in its folded, portable position, and Fig. 3 shows a cross-section view of the leak-proof seal mechanism.

Each sheet follows KIPO margin rules, with 2.5cm top and left margins free of all content. Reference numbers are consistent across all figures: 1 for the rigid cup base, 2 for the foldable silicone side walls, 3 for the leak-proof lid seal, and 4 for the drinking spout. Line weights are 0.3mm for main components, 0.1mm for the textured seal surface, with no color, background graphics, or extra text inside the figure area. This set meets all KIPO patent drawing requirements and will not receive a formatting-related office action.

Common Mistakes to Avoid With KIPO Patent Drawings

Many applications receive avoidable office actions due to simple formatting errors that violate KIPO drawing standards. The most frequent mistakes include:

• Using non-KIPO margin sizes: Filers often default to USPTO or EPO 2cm all-around margins, but KIPO’s 2.5cm top and left margin requirement means labels falling in these areas will trigger a correction request.
• Inconsistent reference numbering: Using different numbers for the same component across multiple Korea patent figures confuses examiners and requires full revision of your drawing set to fix.
• Submitting low-resolution raster files: KIPO requires vector files or 300dpi minimum raster files; blurry, pixelated drawings are rejected immediately as unreadable.
• Including extra content in drawing areas: Logos, watermarks, explanatory text, or decorative background elements are not allowed in the figure area, and will be removed or trigger a resubmission request.

Frequently asked questions

Can I submit color drawings for my KIPO patent application?

Color drawings are only allowed if they are the only way to clearly illustrate a feature that cannot be shown with black and white line art or grayscale. You must submit a written request for approval of color drawings along with your application, and include three copies of the color figures for examiner use. If you submit color drawings without pre-approval, they will be discarded and you will be asked to resubmit black and white versions.

What is the maximum number of Korea patent figures I can submit?

KIPO does not set a strict maximum number of figures, but all figures must be relevant to the invention described in your specification and claims. Excess figures that do not illustrate a claimed or disclosed feature may be discarded by the examiner, and you may be charged an extra fee for overly long drawing sets. Always prioritize figures that show the novel features of your invention over trivial or redundant views.

Do KIPO drawing standards apply to design patent applications too?

Yes, most core KIPO patent drawing requirements apply to both utility and design patent applications, though design patents have additional rules around views. For design patents, you must submit all six standard orthogonal views (front, back, left, right, top, bottom) plus any necessary perspective or cross-section views to fully show the ornamental design. Design patent drawings also cannot include any functional labels or text that is not part of the claimed design itself.