=== Attributes ===
{| class="wikitable"
|+Equivalent XPath Queries (unless otherwise noted, same from left-to-right)
|-
! scope="col" | Value
! scope="col"| XML 2.5
! scope="col"| XML 4.0
! scope="col"| XML 4.1
! scope="col"| XML 4.2
! scope="col"| XML 4.3
! scope="col"| XML 4.4
! scope="col"| XML 4.5
|-
! scope="col" style="text-align:left;" | DTD Version
|
|
|
|
| <code>//us-patent-grant/@dtd-version</code>
|
|
|-
! scope="col" style="text-align:left;" | Publication Reference ID
|}
== TODO (in order) ==
# Flesh out equivalencies for all XML schemas
# Ditto APS
# Ditto Maintenance Fee Data
# Create a new DB schema using a less centralized conception of a patent
# Check correctness versus existing data
# Store abstracts, processing metadata
# Investigate USPTO products for addressees
# '''Handle addressee data'''
== Related Projects ==
* [[Patent|Existing Database Schema]]