Askeladden Petitions for PTAB Review of Three Calabrese Stemer Patents

For Immediate Release:

Date: January 4, 2024


New York, NY — Askeladden L.L.C., as part of its Patent Quality Initiative, recently filed two petitions with the Patent Trial and Appeal Board (PTAB) requesting inter partes review of related U.S. Patent Nos. 7,357,310; 7,954,706; and 8,783,564, held by Calabrese Stemer LLC.

Calabrese Stemer has asserted the ’564 Patent in two patent infringement lawsuits and has asserted the ’310 Patent in an infringement lawsuit against Visa. Askeladden’s IPR petitions argue that the claims of the Calabrese Stemer patents are invalid in light of prior art documents cited in the petitions. The prior art demonstrates that the purported inventions of the three patents, such as authorizing a card transaction and notifying a card user of the transaction, were well-known before March 11, 2005, the earliest effective filing date of the patents.

Askeladden’s Patent Challenge Committee—a group of well-respected experts in the area of patent law—chose to petition the PTAB for review of the ’310, ’706, and ’564 Patents as part of the Patent Quality Initiative.

Askeladden is represented by Kilpatrick Townsend & Stockton LLP.

About the Patent Quality Initiative

Askeladden is an education, information and advocacy organization with the goal of improving the understanding, use and reliability of patents in financial services and other industries. As part of its Patent Quality Initiative, Askeladden strives to promote better patents and patent holder behaviors by regularly filing amicus briefs, Inter Partes Reviews (IPRs) and engaging in educational activities.