Are there any relevance ranking tools that handle exportable search results from large patent corpora?

Yes. There are several tools and platforms that support relevance ranking over patent corpora and allow exportable search results. The best choice depends on whether you want:

• a commercial patent search platform
• a patent analytics database
• or a custom/research pipeline you can control end to end

Common commercial options

These typically provide ranked patent search, filtering, and result export:

• The Lens — strong patent corpus search, relevance ranking, exports, and API options
• Derwent Innovation — advanced relevance ranking, patent family analytics, exportable results
• Orbit Intelligence — good semantic and relevance-based patent search with exports
• PatSnap — search/ranking plus analytics and export
• Google Patents — decent search, but export capabilities are more limited than enterprise tools

If you want more control

For large-scale workflows, people often build relevance ranking on top of patent datasets using:

• Elasticsearch / OpenSearch
• Lucene
• BM25 / vector search / hybrid search
• patent sources like USPTO bulk data, EPO OPS, The Lens API, or Google BigQuery patent datasets

This is useful if you need:

• custom ranking logic
• bulk export in CSV/JSON
• reproducible scoring
• integration into internal review workflows

What to look for

If exportability matters, check whether the tool supports:

• CSV/XLSX export
• API access
• bulk download of search hits
• family-level vs document-level export
• ranking scores or confidence scores included in exports

If you want, I can give you a shortlist by budget, or compare tools specifically for very large patent corpora and export format/API support.