Climate-Tech Patent Classifier: CPC Y02 and Y04S
Where IP meets regulation in fast-moving technology: open-source licensing, AI governance across the EU, India and the US, chip layout-design protection, and climate-tech classification.
Key developmentsUpdated Oct 2026 · 2 items
- Targets extended to refining, petrochemicals, textiles and secondary aluminium
Eight sectors now covered; iron and steel and fertiliser are still to be notified.
Source: ICAP ↗ - India notifies first emission-intensity targets under the Carbon Credit Trading Scheme
Aluminium, cement, chlor-alkali and pulp and paper get targets for 2025–26 and 2026–27 against a 2023–24 baseline.
Source: ICAP ↗
Example loaded. Paste an abstract or a list of keywords.
| CPC | Scope | Match |
|---|---|---|
| Y02E | Low-emission energy generation, transmission or distributionsolar, photovoltaic, battery, energy storage | |
| Y02E60 | Enabling technologies such as storage and hydrogen (subgroup of Y02E)battery, energy storage, lithium, battery management | |
| Y02E10 | Renewable energy sources (subgroup of Y02E)solar, photovoltaic, rooftop | |
| Y04S | Smart gridsdemand response, utility, grid | |
| Y02T | Transportationelectric vehicle, charging | |
| Y02T10 | Road transport (subgroup of Y02T)electric vehicle, charging |
CPC tags: Y02E, Y02E60, Y02E10, Y04S, Y02T, Y02T10 Keywords: solar, photovoltaic, battery, energy storage, lithium, battery management, rooftop, demand response Combine each tag with your technical keywords in Espacenet, PATENTSCOPE or your commercial database.
Y02 and Y04S are the EPO's cross-sectional tagging schemes for climate change mitigation, adaptation and smart grids. Tags sit alongside the main classification, so they are useful for landscapes and green-portfolio reporting. Keyword matching here is a starting point for a search, not a classification.
Desk reference · The Y02 / Y04S scheme
| Subclass | Covers |
|---|---|
| Y02A | Adaptation to climate change |
| Y02B | Buildings, appliances and end-user applications |
| Y02C | Capture, storage or sequestration of greenhouse gases |
| Y02D | ICT reducing its own energy use |
| Y02E | Low-emission energy generation, transmission or distribution |
| Y02P | Production and processing of goods |
| Y02T | Transportation |
| Y02W | Waste and wastewater management |
| Y04S | Smart grids |
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What is the CPC Y02 classification?
Y02 is the EPO's tagging scheme for climate change mitigation and adaptation technologies, with Y04S for smart grids. The tags sit on top of the main classification, so they help with green-technology landscapes and portfolio reporting rather than examination.
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