Junos OS (more formally Juniper Network Operating System) is the FreeBSD-based operating system used in Juniper Networks hardware routers.
 It is an operating system that is used in Juniper's routing, switching and security devices.
 Juniper offers a Software Development Kit (SDK) to partners and customers to allow additional customization.
 The biggest competitor of Junos is Cisco Systems' IOS.
Juniper T-Series is a series of core routers designed and manufactured by Juniper Networks.
 The T-Series core router family comprises the T320, T640, T1600, T4000, TX Matrix, and TX Matrix Plus, designed for high-end and core networks with throughput from 320 Gbit/s to 25.6 Tbit/s with a maximum forwarding rate of 30.7 billion pps.
 The JCS1200, the industry’s only independent control plane scaling system, brings virtualization to the core of the network.
 The TX Matrix Plus provides transport scale up to 25 Tbit/s.
 The T-series routers run the JUNOS operating system.
Juniper E-Series is a series of Broadband Services routers or edge routers manufactured by Juniper Networks.
 The E series was originally developed by Unisphere Networks, which Juniper acquired in 2002.
 These routers provide multiple services including broadband remote access server, broadband video services, dedicated access, 802.11 wireless subscriber management, VOIP, internet access, security services, network address translation (NAT) etc. on a single platform.The carrier-class architecture of E-series routers allows to combine Broadband Remote Access Server (B-RAS) and dedicated access capabilities (T1/E1 and above) on a single and integrated platform.
 The E-series routes runs on JUNOSe software compared to other series of routers of Juniper which runs on JUNOS.
Juniper EX-Series is a series of Ethernet network switches designed and manufactured by Juniper Networks.
 These switches run on Juniper's network operating system, JUNOS.
 Juniper's then CEO and present Chairman, Scott Kriens said that the product launch marked the beginning of a transcending chapter in Juniper's history, declaring, ""The switch is on"".
 The EX series was launched 12 years after the company's founding in 1996.
Unisphere Networks (formally Unisphere Solutions) was a Westford, MA based networking equipment manufacturer and subsidiary of German corporation Siemens AG.
 Formed in 1998 at a cost of roughly US$1 billion, Unisphere was later sold to Juniper Networks in May 2002 for between $585 million and $740 million, as $375 million in cash and 36.5 million shares of Juniper stock.
Trapeze Networks, Inc. was founded in 2002.
 It is a Wi-Fi networking infrastructure and services vendor.
 In Sept 2007 Trapeze was recognized by Frost and Sullivan as the first company to apply controller virtualization techniques to wireless networks resulting in session-level hitless failover capabilities.
 Trapeze was acquired by Belden Inc. in July 2008 for $133 million.
 In December 2008 Trapeze Networks acquired Newbury Networks, a Wi-Fi based Real-Time Location Services (RTLS) company.
 In November 2010 Juniper Networks announced a definitive agreement to acquire Trapeze Networks in an all-cash transaction valued at approximately $152 million.
The Juniper MX-Series is a family of ethernet routers and switches designed and manufactured by Juniper Networks.
 In 2006, Juniper released the first of the MX-series, the MX960, MX240, and MX480.
 The second generation routers, called MX "3D", were first released in 2009 and featured a new Trio chipset and IPv6 support.
 In 2013, the MX routers were improved to increase their bandwidth, and a virtualized MX 3D router, the vMX 3D, was released in 2014.
 Utilizing the Juniper Extension Toolkit (JET), third party software can be integrated into the routers.
Covidien plc was an Irish-headquartered global health care products company and manufacturer of medical devices and supplies.
 Covidien became an independent publicly traded company after being spun off from Tyco International in 2007.
 It was purchased by Medtronic in a transaction that closed in 2015.
Juniper M Series is a series of Multiservice Edge routers designed and manufactured by Juniper Networks, for enterprise and service provider networks.
 It spans over M7i, M10i, M40e, M120, and M320 platforms with 5 Gbit/s up to 160 Gbit/s of full-duplex throughput.
 The "M40" router was the first product by Juniper Networks, which was released in 1998.
 The M Series routers run on JUNOS Operating System.
Juniper Networks, Inc. is an American multinational corporation headquartered in Sunnyvale, California that develops and markets networking products.
 Its products include routers, switches, network management software, network security products and software-defined networking technology.

Question: Has Juniper Networks, Inc. been purchased more that Covidien plc? 
Answer: no