The Telegraph revelations include Communities Secretary Hazel Blears claiming three different properties within a year were her "second home" - the first in her Salford constituency, the second two in London.
Many MPs, he added, faced having to either sell their properties or rent them out following changes to the rules barring them from claiming interest on their mortgage payments.
Since 2008, Spangenberg and his company TQP have launched suits against hundreds of firms, claiming that their use of a common cryptographic protocol in the HTTPS-encrypted portions of their web properties violates the patent invented by Jones and acquired by TQP in 2006.