How to Check Freedom to Operate Using Free Tools

A freedom-to-operate (FTO) analysis determines whether your product infringes any third party's patent claims in your target markets. A full professional FTO costs $5,000–$30,000. This tutorial shows you how to conduct a preliminary FTO assessment using free tools — identifying the most significant risks before committing to a professional analysis.

Step 1: Define What You Are Making

List every functional feature of your product — not your patent claims, but the actual product as you plan to manufacture and sell it. This is the product that must be free to operate, not the invention as described in your patent.

Step 2: Search for Active Patents in Your Technology Area

Use Google Patents, Espacenet, and PATENTSCOPE to search for patents that cover technology similar to your product. Search by keywords, CPC/IPC classification codes, and competitor names. Focus on patents that are currently in force (check legal status using the iInvent tutorial on checking patent status).

Step 3: Read the Claims (Not the Abstract)

For each relevant patent you find, read the independent claims — not the title, not the abstract, not the description. The claims define the legal scope of protection. Does your product include every element of an independent claim? If yes, there is a potential infringement risk. If your product is missing even one element, the claim is not infringed (for literal infringement — the doctrine of equivalents may still apply).

Step 4: Map Claims to Your Product

Create a simple claims chart: list each element of the most relevant independent claims in one column, and note whether your product includes that element in the second column. If every element is present in your product, flag the patent as a potential FTO risk.

Step 5: Assess the Risks

For each flagged patent, check: Is the patent still in force? In which countries? Who is the owner? Is the claim likely valid (was it examined rigorously, or is it a registration-only utility model)? Can your product be redesigned to remove the problematic element?

Step 6: Decide Whether to Commission a Professional FTO

If your preliminary assessment identifies significant risks — active patents with claims that appear to cover your product — commission a professional FTO from a patent attorney before launching. If no significant risks are identified, proceed with awareness that your free-tool analysis is preliminary, not exhaustive.

Sources

1. Espacenet — EPO's free patent database for comprehensive prior art and FTO searches
2. Google Patents — Free full-text patent search with classification browsing
3. Lens.org — Open-access patent and scholarly search with citation analysis
4. WIPO PATENTSCOPE — International patent search database including all PCT applications
5. USPTO — Patent Public Search — Official US patent database for freedom-to-operate analysis