Hi! We don’t follow the TFDS versioning scheme. Instead, our versioning of the GH datasets is synced with the version of the datasets package, i.e., when you load a GH dataset using datasets==x.y.z, the version of the dataset will be the one at the git tag x.y.z.
Yes, our big_patent script matches version 1.0.0, so feel free to open an issue in our GH repo to add support for version 2.1.2.
To follow up on this: the cased and uncased versions actually contain different content, and the cased one is easier since it contains a Summary of the Invention in the input.