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This page pertains to UD version 2.

UD Chinese PatentChar

Language: Chinese (code: zh)
Family: Sino-Tibetan

This treebank has been part of Universal Dependencies since the UD v2.11 release.

The following people have contributed to making this treebank part of UD: Yixuan Li, Kim Gerdes, Bruno Guillaume.

Repository: UD_Chinese-PatentChar
Search this treebank on-line: PML-TQ
Download all treebanks: UD 2.14

License: CC BY-NC-SA 3.0

Genre: legal

Questions, comments? General annotation questions (either Chinese-specific or cross-linguistic) can be raised in the main UD issue tracker. You can report bugs in this treebank in the treebank-specific issue tracker on Github. If you want to collaborate, please contact [li • yixuan727 (æt) gmail • com]. Development of the treebank happens outside the UD repository. If there are bugs, either the original data source or the conversion procedure must be fixed. Do not submit pull requests against the UD repository.

Annotation Source
Lemmas not available
UPOS annotated manually, natively in UD style
XPOS not available
Features annotated manually, natively in UD style
Relations annotated manually in non-UD style, automatically converted to UD


A treebank of Chinese patent application texts collected from the Chinese patent office’s website CNIPA.

The sentences are randomly selected from the patent claims of the IPC section “G” from November 2017 to September 2018.

The syntactic analysis is originally done in SUD on the character level under the name SUD_Chinese-PatentChar. See SUD Guidelines : https://surfacesyntacticud.github.io/guidelines/u/


Statistics of UD Chinese PatentChar

POS Tags





Tokenization and Word Segmentation



Nominal Features

Degree and Polarity

Verbal Features

Pronouns, Determiners, Quantifiers

Other Features


Auxiliary Verbs and Copula

Core Arguments, Oblique Arguments and Adjuncts

Here we consider only relations between verbs (parent) and nouns or pronouns (child).

Relations Overview