Patent Drawings & Illustrations
Patent-office-compliant drawings for Indian and international patent applications.
- Registered patent agentsPatent work is handled only by agents registered with the Indian Patent Office
- NDA before you shareWe sign a non-disclosure agreement before you send any technical details
- Your idea stays yoursNothing is filed or published without your written approval
- Free first reviewA registered patent agent tells you if it is worth filing, before you pay
Quick answer
Patent drawings show the invention in the black-and-white line style that patent offices require. CorpBridge prepares patent drawings from ₹999 per sheet, formatted for the Indian Patent Office and PCT, from your sketches, photos or CAD files.
| Professional fee | ₹999/sheet + 18% GST |
|---|---|
| Government charges | Extra page fees apply if your specification exceeds 30 pages |
| Time taken | 3–5 working days |
| Form / portal | Drawing sheets (Rule 15) |
| Documents | 2 items (listed below) |
| Done | 100% online |
What is Patent Drawings & Illustrations?
Clear drawings make claims easier to understand and help avoid objections. We convert sketches, photos or CAD files into compliant drawings with reference numerals that match your specification.
What's included in our Patent Drawings & Illustrations service?
- Line drawings, flowcharts and block diagrams
- Reference numerals matched to the specification
- Formatting for India and PCT
- Two rounds of changes
What documents are required for Patent Drawings & Illustrations?
- Sketches, photos or CAD files
- Draft specification if available
What is the process for Patent Drawings & Illustrations?
Share
Send your sketches or files.
Draw
We prepare the drawing sheets.
Review
You or your agent check and request changes.
Deliver
Final files ready to file.
How much does Patent Drawings & Illustrations cost?
| Component | Amount | Paid to |
|---|---|---|
| CorpBridge professional fee | ₹999/sheet | CorpBridge |
| GST on professional fee | ₹180 | Government (via CorpBridge) |
| Government fee / stamp duty | Extra page fees apply if your specification exceeds 30 pages | Government, at actuals |
Your expert confirms the exact government charges for your case before you pay. Build a full package estimate →
Free tools: patent fee calculator · patent deadline calculator
Applying from outside India?
Foreign companies, startups and law firms can use our Patent Drawings & Illustrations service too. Applicants without a place of business in India need an address for service in India, and we act as your agent: instructions by email, reporting in English and a fixed quote before we act. IP services in India for foreign companies →
Patents by technology
What can be patented in your field: Software and apps · AI and machine learning · Pharma and formulations · Medical devices and diagnostics · Mechanical and product inventions · EV, battery and clean-tech · Agritech and food processing
Frequently asked questions about Patent Drawings & Illustrations
Are drawings mandatory in a patent application?
Only when the invention can be illustrated by drawings, which is the case for most mechanical, electrical and device inventions. Flowcharts are common for software and processes.
What is the cost of Patent Drawings & Illustrations?
CorpBridge's professional fee is ₹999 per sheet, exclusive of 18% GST, extra page fees apply if your specification exceeds 30 pages. The exact government charges are confirmed before you pay.
How long does Patent Drawings & Illustrations take?
3–5 working days, assuming documents are complete and the authority raises no queries.
What documents are required for Patent Drawings & Illustrations?
Sketches, photos or CAD files; Draft specification if available.
Often taken together
Patent Search
SearchA registered patent agent searches patents and literature to tell you whether your invention is new and inventive.
Provisional Patent Application
Form 1 / 2Secure your priority date early with a provisional specification while you keep developing the invention.
Patent Drafting
Form 2Drafting of the complete specification and claims by a registered patent agent, built to survive examination.
Not sure what to protect first?
Book a free 15-minute call. An IP expert will tell you which trademarks, patents or designs your business needs.