Intellectual Property Drawing Services
Patent Drawings & Patent Illustrations
Los Angeles, California
SNS Patent Drafting · Orange County & Los Angeles, California
PCT International Patent Drawings — WIPO Compliant & Examination-Ready
Filing an international patent application under the Patent Cooperation Treaty is one of the most consequential steps an inventor can take. Your PCT drawings must satisfy the strict formal requirements of WIPO PCT Rule 11 and survive scrutiny by every national office where you seek protection — simultaneously. SNS Patent Drafting prepares precise, examiner-ready PCT patent illustrations that comply with WIPO Administrative Instructions and meet the requirements of every major Receiving Office worldwide. Serving inventors, product designers, and IP law firms throughout Los Angeles, Orange County, and all of Southern California — and internationally.
✓ WIPO PCT Rule 11 Compliant
✓ Multi-Figure Sets Prepared
✓ National Phase Adaptation Available
✓Unlimited Revisions
300+
PATENTS DRAFTED & FILED
3-5 Days
RUSH TURNAROUND AVAILABLE
100%
USPTO COMPLIANCE RATE
50+
STATES & COUNTRIES SERVED
What Are PCT International Patent Drawings?
The Patent Cooperation Treaty (PCT) is an international treaty administered by the World Intellectual Property Organization (WIPO) that allows inventors to file a single patent application — called an international application — and seek patent protection in over 150 countries simultaneously. It is the most widely used pathway for international patent protection in the world.
Every PCT application that discloses an invention capable of being illustrated must include drawings. These drawings are not optional — they are a core component of the international disclosure and are often what patent examiners in designated countries rely on most when evaluating patentability and understanding the scope of your claims.
PCT patent drawings must conform to WIPO Administrative Instructions under PCT Rule 11, which establishes strict requirements for line weight, margins, figure numbering, reference numerals, shading, and reproduction quality. Drawings that fail to meet these standards can result in formal deficiencies, Office Actions, and costly delays — across every designated country simultaneously.
Unlike a domestic U.S. utility patent drawing, PCT drawings must be designed to survive translation into dozens of national phase proceedings. A drawing file accepted by the USPTO as a Receiving Office may still fail the requirements of the European Patent Office (EPO), the Japan Patent Office (JPO), or WIPO's International Bureau if not prepared to the higher PCT standard.
The Legal Standard: Under WIPO PCT Rule 11, drawings must be "suitable for direct reproduction." Every figure must be clear, durable, and complete. Formal deficiencies in PCT drawings can delay your international filing date — and unlike national applications, PCT deficiencies affect your entire global filing strategy at once.
Why PCT Drawing Quality Can Make or Break Your International Filing
Most patent applicants focus on claims and specifications — and rightfully so. But experienced patent attorneys know that non-compliant drawings are one of the most common causes of avoidable problems in PCT applications. Here is exactly what is at stake:
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WIPO Formal Deficiency Notices. If your drawings do not meet Rule 11 standards, WIPO's International Bureau will issue a formal notice requiring correction within a strict deadline. Fees may apply. This can delay your international filing date — and your priority date is everything in international patent strategy.
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National Phase Rejections. When your PCT application enters national phase in designated countries — the USPTO, EPO, JPO, CNIPA, KIPO, and others — each national office reviews your drawings under their own formal requirements. Drawings that passed the international phase may still generate drawing objections in individual countries if not prepared to the highest standard from the start.
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Prosecution Weaknesses. Vague or poorly executed drawings create claim interpretation problems during prosecution in every country. Examiners use drawings to understand what the applicant actually invented. Clear, precise figures reduce the risk of prior art rejections and narrow claim interpretations across your entire patent family.
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Correction costs multiply internationally. Correcting drawing errors in a domestic application is expensive. Correcting them across five or ten national phase applications — each with its own deadlines and fee schedules — is far more so. Getting the drawings right at PCT filing eliminates this compounding risk entirely.
Critical Warning — National Phase Timing
The 30-month PCT deadline to enter national phase in most countries cannot be extended in most jurisdictions. Drawing deficiencies that are not resolved before national phase entry can become permanent problems. Professional PCT drawings prepared to Rule 11 standards from the start are the only way to eliminate this risk.
PCT Patent Drawing Services We Provide
The USPTO requires a sufficient number of views to constitute a complete disclosure of the ornamental appearance of the design. For most three-dimensional articles, this means a minimum of seven standard views — each shown head-on, not from an angle. SNS Patent Drafting prepares all required and supplemental views for every design patent application.
Number | PCT Patent Drawing Service |
|---|---|
1 | WIPO Rule 11 Compliant Drawings
All illustrations prepared to meet every mandatory formal requirement of PCT Rule 11 — including proper margins (2.5 cm top, 2.5 cm left, 1.5 cm right, 1.0 cm bottom), line weight standards, minimum 3.2 mm lettering height, shading rules, and figure reference numbering. Accepted by WIPO's International Bureau and all major Receiving Offices including RO/US. |
2 | Multi-Figure Technical Illustrations
Complex inventions require multiple drawing sheets with multiple figures — exploded views, cross-sectional views, perspective views, elevation views, flow charts, block diagrams, and circuit diagrams. We handle multi-figure sets for mechanical, electrical, software, chemical, and biotech inventions across any technology field. |
3 | National Phase Drawing Adaptation
Already in national phase? We adapt existing PCT drawings to meet the specific formal requirements of individual patent offices including the USPTO (37 CFR 1.84), EPO (Rule 46 EPC), JPO, CNIPA, KIPO, and CIPO. Reduce formal drawing objections before they happen. |
4 | Rush & Expedited PCT Drawings
Filing deadlines don't move. Our expedited service delivers fully compliant PCT figures in as little as 24–48 hours without sacrificing quality or compliance. Available for standard technical drawings and complex multi-sheet sets. Confirm availability when you request your quote. |
WIPO PCT Rule 11 Drawing Requirements — At a Glance
PCT drawings must meet the following formal standards set by the WIPO Administrative Instructions under the Patent Cooperation Treaty. SNS Patent Drafting cross-checks every drawing set against these requirements — and the RO/US requirements for U.S.-based applicants — before delivery.
Requirement | PCT Standard (Rule 11) |
|---|---|
Paper Size | A4 (210 × 297 mm) preferred; U.S. letter acceptable |
Top Margin | Minimum 2.5 cm |
Left Margin | Minimum 2.5 cm |
Right Margin | Minimum 1.5 cm |
Bottom Margin | Minimum 1.0 cm |
Line Weight | Durable, clean, black lines — no faint or gray lines |
Shading | Permitted if it does not reduce clarity of the drawing |
Reference Numerals | Must correspond to description; consistent throughout all sheets |
Figure Labels | Fig. 1, Fig. 2, etc. — clearly labeled on every sheet |
Lettering Size | Minimum 3.2 mm height for all characters and numerals |
Color | Black and white required; color permitted only with special request |
Scale | Drawings must be large enough for all details to be discernible upon reproduction |
PCT International vs. U.S. Utility Patent Drawings — Key Differences
Many applicants assume drawings prepared for a U.S. utility patent application automatically meet PCT requirements. This is not always the case. SNS Patent Drafting recommends preparing drawings to the higher PCT standard from the start — PCT-standard drawings are always acceptable for U.S. national phase entry; the reverse is not always true.
37 CFR § 1.84 governs U.S. utility patent drawing requirements. PCT Rule 11 governs international drawings — and the two standards diverge in important ways:
Feature | USA Utility 37 CFR 184 | PCT International (Rule 11) |
|---|---|---|
Top Margin | 2.5 cm | 2.5 cm |
Reference Numerals | Required for all claimed elements | Required; must match description exactly |
Line Quality | Black, durable lines | Black, durable lines — reproduction quality emphasized |
Shading | Permitted | Permitted if clarity of reproduction is maintained |
Color Drawings | Special petition required | Color permitted with WIPO request |
Filing Format | PDF, TIFF via Patent Center | PDF, TIFF via ePCT portal |
Formal Review | USPTO examiner | WIPO International Bureau + all national offices |
Paper Size | U.S. letter or A4 | A4 strongly preferred |
How the PCT Patent Drawing Process Works with SNS
1
Submit Your Invention Disclosure
Send us your invention disclosure, provisional application, draft specification, sketches, photos, 3D models, or CAD files. We work from whatever you have. All submissions are treated as strictly confidential — we are happy to sign an NDA before any materials are shared.
2
Free Consultation & Drawing Set Planning
We review your invention and identify all features requiring illustration — including any views specifically needed to support your claims across your targeted national offices. We plan the complete figure set before drafting begins to ensure full WIPO-compliant disclosure.
3
Professional Drafting Begins
Using professional CAD and technical illustration software, we draft all required figures to WIPO Rule 11 standards. Each figure is labeled, numbered, and formatted for PCT compliance — including proper margins, line weights, lettering size, and reference numerals consistent with your specification.
4
Internal Compliance Review
Every drawing set undergoes a full internal quality and compliance review before delivery. We check against WIPO Administrative Instructions, PCT Rule 11, and (for U.S. filers) 37 CFR 1.84 to catch any issues before they reach your filing. Included at no extra charge.
5
Your Review & Revisions — Unlimited
We deliver a complete draft drawing set for your review. If anything needs to be adjusted — a view, a reference numeral, an additional figure — we revise at no additional charge. We work with you until every drawing is exactly right.
6
Delivery of WIPO-Ready Files
Final drawings are delivered in PDF (for ePCT filing) and high-resolution TIFF or DXF formats, named and organized to your attorney's preferred filing conventions. Standard delivery in 3–5 business days; rush in 24–48 hours.
Common PCT Drawing Deficiencies — And How We Prevent Them
WIPO formal deficiency notices related to drawings are avoidable. At SNS Patent Drafting, our quality review process is specifically designed to catch every one of these issues before your international application is filed.
Deficiency / Rejection Reason | TextHow SNS Prevents It |
|---|---|
Margins too narrow or non-standard paper size | All sheets are formatted to A4 with standard WIPO Rule 11 margins: 2.5 cm top and left, 1.5 cm right, 1.0 cm bottom. Page size and margins are verified on every sheet before delivery. |
Lines too faint for reproduction — gray or thin strokes that will not survive reduction | All lines are rendered in durable, solid black at weights verified for clean reproduction. We test all drawings at standard WIPO reduction ratios before delivery. |
Lettering too small — characters below the 3.2 mm minimum height | All text, reference numerals, and figure labels are set at minimum 3.2 mm height per Rule 11.13. Character size is checked on every sheet. |
Reference numerals inconsistent between sheets or not matching the description | We prepare a reference numeral master list before drafting begins. All numerals are cross-checked against the specification before delivery. |
Figures not adequately labeled (Fig. 1, Fig. 2, etc.) | Every figure on every sheet is labeled with the correct Fig. designation. We also supply a complete figure description list for incorporation into your specification. |
Insufficient detail — features of the invention not visible or discernible | We review the invention disclosure and plan the complete figure set before drafting begins, ensuring every claimed feature is illustrated with sufficient clarity across multiple views where needed. |
Drawings contain text, tables, or prohibited content | PCT drawings contain only graphical content — no tables, chemical formulas (other than structural), or flowing text as required by Rule 11.11. |
Who Uses Our PCT Patent Drawing Services
Design patent drawings require a specific combination of technical knowledge and legal precision that general illustrators do not possess. SNS Patent Drafting works with clients who need drawings prepared to the exact standards required for international patent filing.
Solo Inventors & Startups
Entrepreneurs and startup founders filing PCT applications to protect innovations globally before entering international markets. We guide you through exactly what is needed for a compliant international drawing set — from a single figure to a complex multi-sheet disclosure.
Corporate IP Departments
In-house IP teams at technology, medical device, semiconductor, consumer electronics, and industrial companies managing multi-country patent strategies. We provide consistent, compliant drawing quality at the volume and speed that corporate IP portfolios demand.
Patent Attorneys & IP Agents
IP attorneys and registered patent agents in Orange County, Los Angeles, Southern California, and nationwide who need a reliable, technically accurate drafting partner for client PCT applications. Our drawings are prepared to pass WIPO and national office review without formal objection.
International Applicants
Foreign inventors and companies from Japan, South Korea, Germany, China, Israel, Canada, Australia, the UK, and across Europe and Asia who need USPTO-ready drawings for U.S. national phase entry. We prepare drawings that satisfy RO/US requirements from the start.
Industries & Technologies We Cover
Our technical draftsmen have prepared PCT patent drawings across virtually every technology field. No matter how complex your invention, we have the technical background to illustrate it accurately.
PCT Patent Drawing Services — Orange County, Los Angeles & Southern California
SNS Patent Drafting serves inventors, patent attorneys, and IP law firms throughout Southern California with professional, WIPO-compliant PCT patent drawings. From technology startups in Irvine to IP law firms in Los Angeles, from medical device companies in Orange County to semiconductor firms in the South Bay — we understand the innovation industries that drive Southern California's economy.
We work directly with designers and patent attorneys throughout:
Irvine · Santa Ana · Anaheim · Newport Beach · Costa Mesa · Fullerton · Garden Grove · Tustin · Orange · Los Angeles · Long Beach · Pasadena · Torrance · El Segundo · Burbank · Glendale · Santa Monica · Riverside · San Bernardino · Ontario · Rancho Cucamonga · San Diego · Carlsbad
Our services are available nationwide and internationally. All work is conducted and delivered securely online. We deliver WIPO-compliant PCT patent drawings to clients in every U.S. state and in over 50 countries — including Canada, the United Kingdom, Germany, France, Japan, South Korea, China, Israel, Australia, India, Brazil, and more.
Frequently Asked Questions — PCT Patent Drawings
Are drawings always required in a PCT application?
Drawings are required whenever the subject matter of the invention admits of illustration. For most mechanical, electrical, and device inventions, drawings are mandatory. For purely method or composition of matter inventions, drawings may be optional — but including them almost always strengthens your international disclosure. See the WIPO PCT Applicant's Guide for detailed guidance.
Can I use my existing U.S. utility patent drawings for my PCT application?
Often yes — but not always. U.S. utility drawings prepared to 37 CFR 1.84 standards frequently meet Rule 11 requirements as well, particularly if prepared on A4 paper. However, drawings prepared only to U.S. letter size specifications, or with margins that do not meet WIPO minimums, will require reformatting. SNS Patent Drafting reviews your existing drawings and advises whether adaptation is needed or whether new drawings are required.
How many drawing sheets will my PCT application need?
The number of sheets depends on the complexity of your invention and the number of distinct aspects requiring illustration. Simple inventions may require 1–3 sheets. Complex mechanical, electrical, or software inventions may require 10 or more sheets. We assess your invention and recommend the optimal figure set during the consultation process — at no charge.
What file formats will I receive?
We deliver your completed PCT drawing set in PDF (for filing via the ePCT portal) and/or high-resolution TIFF or DXF formats. All files are named and organized to your attorney's preferred filing conventions.
Do you provide drawings for PCT applications entering national phase?
Yes. We provide both original PCT drawings and national phase adaptation services for the USPTO, EPO, JPO, CNIPA, KIPO, and other national offices. If your existing drawings need to be modified to meet a specific national office's requirements — for example, adapting broken line usage for offices that do not permit it — we handle that as well.
What happens if WIPO issues a formal deficiency notice related to our drawings?
SNS Patent Drafting will correct any drawings we prepared, at no charge, if they are objected to on the basis of formal compliance with WIPO Rule 11. This is our standard guarantee on every PCT drawing project. We have never had a Rule 11 deficiency notice that was not attributable to something outside our control.
Do you handle confidential inventions?
Yes. Confidentiality is built into our process. We sign NDAs upon request and all invention disclosures are treated as strictly confidential. We do not store, share, or use any client invention data for any purpose other than completing your drawing project.
How much do PCT patent drawings cost?
Pricing depends on the number of figures, complexity of the invention, and turnaround time required. We provide free, no-obligation quotes for every project — with a response within one business day. Contact SNS Patent Drafting for a free quote.
What Our Clients Say
"Sal does terrific patent drafting for our whole firm! Keep up the great work, Sal."
— DANIEL M. CISLO, ESQ, MANAGING PARTNER AT
CISLO & THOMAS LLP
WEST LOS ANGLES, CALIFORNIA
"SNS Patent Drafting has been our firm's go-to patent illustration service for over two years. The drawings are always 37 CFR § 1.84 compliant, delivered on time, and never require corrections from the USPTO. For a busy IP practice, that reliability is everything."
— M. RICHARDSON, PATENT ATTORNEY · IRVINE, CALIFORNIA
"SNS Patent Drafting provides quality patent drawings at cost-effective pricing. Sal is also easy to work with, eager to provide accurate drawings, and readily available to discuss difficult projects. I appreciate his willingness to go the extra mile to get a job done right."
— C. WOOK PAK, ESQ
PATENT ATTORNEY AT
CISLO & THOMAS LLP
WEST LOS ANGELES, CALIFORNIA
"SNS Patent Drafting has been our firm's go-to patent illustration service for over two years. The drawings are always 37 CFR § 1.84 compliant, delivered on time, and never require corrections from the USPTO. For a busy IP practice, that reliability is everything."
— M. RICHARDSON, PATENT ATTORNEY · IRVINE, CALIFORNIA
"Very professional, quick turnaround times. We loved working with SNS. They ensured we were satisfied with the work throughout the entire process."
— CAROLINA TRUJILLO,
DIRECTOR AT WEBER SHANDWICK
NEW YORK, NEW YORK
"SNS Patent Drafting has been our firm's go-to patent illustration service for over two years. The drawings are always 37 CFR § 1.84 compliant, delivered on time, and never require corrections from the USPTO. For a busy IP practice, that reliability is everything."
— M. RICHARDSON, PATENT ATTORNEY · IRVINE, CALIFORNIA
Useful Resources for PCT Applicants
The following official government and intergovernmental resources provide authoritative information about the PCT system, drawing requirements, and international patent filing:
100% WIPO & USPTO Compliant — Guaranteed
Every PCT drawing set we deliver is guaranteed to meet WIPO Rule 11 and PCT Administrative Instruction requirements. If WIPO or any national office issues a formal deficiency notice related to our drawings, we correct them at no additional charge. That is our commitment to every client.
Get WIPO-Compliant PCT Patent Drawings Today
Your international patent filing depends on drawings that meet the standard of every national office where you seek protection. SNS Patent Drafting delivers professional, examiner-ready PCT patent drawings with fast turnaround and unlimited revisions.
✓ WIPO PCT Rule 11 Compliant
✓ All Required Figures Prepared
✓ Serving LA, OC & All 50 States
✓ Unlimited Revisions Included
✓ 24-Hour Rush Available
All design materials and invention disclosures are treated as strictly confidential. NDAs available upon request.
SNS Patent Drafting provides professional patent illustration and technical drawing services to inventors, patent attorneys, and IP law firms throughout Los Angeles, Orange County, Riverside, San Bernardino, San Diego, and all of Southern California — as well as clients nationwide and internationally. Every drawing is prepared to comply with WIPO Administrative Instructions and PCT Rule 11 for international PCT filings, and to 37 CFR § 1.84 for USPTO national phase entry. SNS Patent Drafting is not a law firm and does not provide legal advice. For legal advice regarding your patent application, consult a registered patent attorney or agent. All design materials and invention disclosures are treated as strictly confidential. NDAs available upon request.
Also see our Utility Patent Drawings and Design Patent Drawings pages for additional patent illustration services.