TQP Development, LLC

TQP Development, LLC is a Texas-based limited liability company widely identified as a non-practicing entity (NPE), also known as a patent assertion entity (PAE). The company is associated with Erich Spangenberg, a prominent figure in the patent monetization industry, and his firm IPNav. As a privately held entity focused on litigation, details like founding year, employee count, and revenue are not publicly available, though one 2012 report stated the firm technically had two employees: the patent's original inventor and Spangenberg.

TQP Development has no products or operational services. Its business model consists of acquiring and asserting patents against companies that allegedly infringe on them. The company's litigation campaigns have centered on a single patent, U.S. Patent No. 5,412,730, titled "Encrypted Data Transmission System Employing Means for Altering the Encryption Keys." TQP has used this patent to sue hundreds of firms across technology, banking, and e-commerce sectors, alleging that their use of common web encryption protocols like HTTPS violates the patent.

The company's patent-litigation posture is exclusively that of a plaintiff. As indicated by the provided data, TQP has filed at least seven lawsuits as a plaintiff and has not been a defendant in any tracked cases. This 7-0 plaintiff-to-defendant ratio is characteristic of a patent assertion entity. All of its tracked cases were filed in the U.S. District Court for the Eastern District of Texas, a jurisdiction historically considered favorable to patent plaintiffs. RPX Corporation, a firm that provides patent risk management services, has also identified TQP Development as an NPE.

TQP has sued a vast number of companies, including major technology firms, banks, and retailers. Notable defendants in the tracked cases include Intuit Inc., Adobe Systems, Inc., and Chrysler Group LLC. The suits claim infringement by companies using standard encrypted communication on their websites and online services. For instance, the 2012 case against Intuit focused on the use of data encryption technology. Many companies, including Amazon, Apple, and Dell, have settled with TQP rather than proceed through expensive litigation.