There have been efforts along these lines, e.g.: RPX [0] and Allied Security Trust [1]. And the general idea is called Defensive Patent Aggregation [2].
[0] https://en.wikipedia.org/wiki/RPX_Corporation
[1] https://en.wikipedia.org/wiki/Allied_Security_Trust
[2] https://en.wikipedia.org/wiki/Defensive_patent_aggregation
There have been efforts along these lines, e.g.: RPX [0] and Allied Security Trust [1]. And the general idea is called Defensive Patent Aggregation [2].
[0] https://en.wikipedia.org/wiki/RPX_Corporation
[1] https://en.wikipedia.org/wiki/Allied_Security_Trust
[2] https://en.wikipedia.org/wiki/Defensive_patent_aggregation