---
license: mit
configs:
- config_name: default
  data_files:
  - split: validation
    path: data/validation-*
dataset_info:
  features:
  - name: patent_number
    dtype: string
  - name: decision
    dtype: string
  - name: title
    dtype: string
  - name: abstract
    dtype: string
  - name: claims
    dtype: string
  - name: background
    dtype: string
  - name: summary
    dtype: string
  - name: description
    dtype: string
  - name: cpc_label
    dtype: string
  - name: ipc_label
    dtype: string
  - name: filing_date
    dtype: string
  - name: patent_issue_date
    dtype: string
  - name: date_published
    dtype: string
  - name: examiner_id
    dtype: string
  - name: cpc
    dtype: string
  - name: cpc-section
    dtype: string
  - name: cpc-class
    dtype: string
  - name: cpc-subclass
    dtype: string
  - name: cpc-group
    dtype: string
  - name: cpc-subgroup
    dtype: string
  - name: ipc
    dtype: string
  - name: ipc-section
    dtype: string
  - name: ipc-class
    dtype: string
  - name: ipc-subclass
    dtype: string
  - name: ipc-group
    dtype: string
  - name: ipc-subgroup
    dtype: string
  - name: embeddings-abstract-jina-v4
    list:
      list: float64
  - name: embeddings-abstract-qwen3-4b
    list: float64
  - name: embeddings-summary-qwen3-4b
    list: float64
  splits:
  - name: validation
    num_bytes: 2278699756
    num_examples: 9094
  download_size: 1439423072
  dataset_size: 2278699756
---

# HUPD Jan 2016 (local sample) with CPC/IPC taxonomy columns

Each classification symbol is of the form A01B 1/00 (which represents "hand tools"). The first letter represents the "section" consisting of a letter from A ("Human Necessities") to H ("Electricity"). Combined with a two digit number, it represents the "class" (class A01 represents "Agriculture; forestry; animal husbandry; trapping; fishing"). The final letter makes up the "subclass" (subclass A01B represents "Soil working in agriculture or forestry; parts, details, or accessories of agricultural machines or implements, in general"). The subclass is followed by a one-to-three-digit "group" number, an oblique stroke and a number of at least two digits representing a "main group" or "subgroup". A patent examiner assigns classification symbols to patent application or other document in accordance with classification rules, and generally at the most detailed level which is applicable to its conten

## Added columns

For both CPC and IPC, we add semantic hierarchy columns derived from the compact string codes in HUPD:

- `cpc`, `cpc-section`, `cpc-class`, `cpc-subclass`, `cpc-group`, `cpc-subgroup`
- `ipc`, `ipc-section`, `ipc-class`, `ipc-subclass`, `ipc-group`, `ipc-subgroup`

Notes:
- HUPD stores compact strings (e.g. `G06F30416`) rather than `A01B 1/00`. We derive group/subgroup by splitting trailing digits as `group_digits` + last-two-digits `subgroup_digits` (e.g. `304/16`).