# Patent Classification Explorer - **Website:** - **Primary alias:** `patentclassificationexplorer.com` ## Description Patent Classification Explorer is a free online tool for navigating and understanding the International Patent Classification (IPC) and Cooperative Patent Classification (CPC) systems. It helps researchers, inventors, and other users explore more than 254,000 CPC codes, 80,000 IPC codes, and thousands of catchword keywords. Visitors can search by code or keyword, browse classification hierarchies, switch between systems, and compare their differences through a side-by-side Diff view. Code pages provide descriptions, hierarchy context, and cross-system mappings. The platform also offers patent insights, including global filing statistics, geographic and technology trends, top applicants, and emerging areas. Its interactive Patent Universe presents CPC codes in a navigable 3D visualization. Users seeking a suitable classification for an invention can describe it in plain language using the AI Classification Suggest feature. Educational guides and frequently asked questions explain classification structures, code formats, and distinctions between IPC and CPC. The site draws classification data from WIPO and the EPO and USPTO, which jointly manage the CPC, and reflects the stated 2026.01 release. ## Industries - 🗺 Reference Materials - ⚖️ Law and Government - 🖥 Computers Electronics and Technology - ⚖️ Legal _(under Law and Government)_ ## Logos & icons - logo _(primary)_ — PNG, SVG — [download](https://cdn.brandfetch.io/idguyMjPtN/w/820/h/820/theme/dark/logo.png?c=1bxid64Mup7aczewSAYMX&t=1791161067060) ## Colors | Name | Hex | Theme | | --- | --- | --- | | Cerulean Blue | #2969b4 | accent | | Cod Gray | #0f0f0f | dark | | Chalky | #eec68b | light | ## Fonts - var(--font-sans) — asset _(custom)_ - var(--font-sans) — asset _(custom)_ --- _Source: _ _See [/llms.txt](/llms.txt) for a full list of agent-readable pages, and [/auth.md](/auth.md) for how agents authenticate._