Topwire LLC

Topwire LLC is a Texas-based limited liability company formed in February 2025. Public records identify a Dallas-based patent attorney, Robert Katz, as its manager. The company's address is listed in Austin, Texas. There is no indication that Topwire LLC has any employees, revenue, or business operations beyond patent assertion.

Based on its activities, Topwire LLC is a non-practicing entity (NPE) that acquires patents to assert against other companies. In March 2025, Topwire acquired a patent portfolio of two from the inventor, Dyi-Chung Hu. The asserted patent (9,859,202) relates to a "semiconductor structure for separating and electrically connecting two layered packaging substrates." Topwire has alleged this technology is used in smartphones with double-layered logic boards.

As reflected in the provided case list, Topwire's litigation posture is that of a patent assertion entity. In December 2025, the company launched its first litigation campaign by filing two lawsuits as a plaintiff, one against Apple, Inc. in the Western District of Texas and another against Samsung in the Eastern District of Texas, both known as frequent venues for patent litigation. These offensive suits triggered defensive responses from the accused infringers.

The company's notable cases are the two district court infringement suits it filed and the subsequent challenges to its patent at the Patent Trial and Appeal Board (PTAB). In March 2026, both Apple and Samsung filed petitions for inter partes review against Topwire at the PTAB, challenging the validity of the asserted patent. These four tracked cases represent the entirety of Topwire's known litigation activity.