Acousto-Magnetic (AM) Anti-Theft Labels

Published: Mon 7 Dec 2009 02:21 PM
Court Ruling Prohibits ZhenTai from Making or Selling Its Acousto-Magnetic (AM) Anti-Theft Labels
ADT Security Services today announced a major victory in a patent lawsuit in China against ZhenTai Science & Technology Company. ZhenTai was found liable for infringing upon ADT's industry-leading Sensormatic anti-theft Ultra.Max label technology. The lawsuit involved acousto-magnetic (AM) labels manufactured by ZhenTai, located in Jingjiang City, Fujian Province. ZhenTai offered its labels for sale both in China and for export abroad. In its decision, the Quanzhou Intermediate People's Court enjoined ZhenTai from making, using or selling its infringing labels. Furthermore, ZhenTai was ordered to destroy any equipment, molds and drawings used to produce these labels and to pay nominal damages to Sensormatic.
This is the second court ruling in a year against a company infringing Sensormatic anti-theft label patents. In December 2008, a U.S. court found The Tag Company liable for patent infringement, misappropriating trade secrets and unfair trade practices.
Over the last 40 years, Sensormatic has invested substantial resources toward advancing its Electronic Article Surveillance (EAS) solutions, which are designed and manufactured to deliver industry-leading performance at a competitive price. Any AM labels not similarly designed may risk impacting the performance of Sensormatic Ultra.Max-based EAS systems. Examples are failures to alarm as well as failures to deactivate and false alarms, which can lead to customer service issues. If such labels are used in source tagging programs, poor performance may undermine confidence in source tagging and AM labels in general.
``We are pleased with the court ruling and the confidence it should give customers that they can continue to rely on the integrity and high performance of ADT's Sensormatic anti-theft solutions,’’ said Kelvin Lam, Vice President of Retail and Security Products, ADT Security, Asia Pacific. ``We are committed to protecting the source tagging supply chain and retailer's investment in our solutions.’’
ADT helps manufacturers tag more than four billion items each year, with over 30 billion products source-tagged with Sensormatic labels since the inception of the program. For more information about Sensormatic goods and services please visit
About ADT Security Services
ADT Security Services, a Tyco International company, is the world's largest provider of electronic security services to more than seven million commercial, government and residential customers worldwide. ADT's total security solutions include intrusion, fire protection, closed circuit television, access control, critical condition monitoring, electronic article surveillance, radio frequency identification (RFID) and integrated systems. ADT's website address is
About the Sensormatic Retail Solutions Portfolio
The industry-leading Sensormatic retail solutions portfolio offers vital loss prevention and operational improvement technologies and solutions. Backed by more than 1,500 patents, the Sensormatic solutions portfolio is sold through ADT and Tyco partners around the world. From the front of the store through the entire retail supply chain, Sensormatic solutions help keep losses lower - and profits higher. Today, over 80 percent of world's top 200 retailers that use EAS rely on Sensormatic solutions, which include EAS, source-tagging, data analytics and in-store, item-level intelligence applications. Sensormatic forward-thinking solutions also include dual EAS-RFID technology that provides item-level security and visibility in an ever changing retail environment. For more information, please visit

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