Cisco\u2019s planned acquisition of Acacia Communications took a litigious turn this week as the networking giant has gone to court to keep the optical technologies vendor from terminating the purchase.\nCisco filed for a temporary restraining order in Delaware Chancery Court Jan. 8 to prevent Acacia from terminating its acquisition agreement with the company. The move followed an Acacia statement issued earlier on Jan. 8 that stated the company \u201chas elected to terminate its merger agreement with Cisco Systems, Inc., effective immediately.\u201d\n\nAcacia said the proposed merger was conditioned on the satisfaction or waiver of customary closing conditions, including obtaining necessary regulatory approvals within the timeframe contemplated by the merger agreement. One of those was the approval of China\u2019s State Administration for Market Regulation (SAMR), and Acacia said that hasn't been obtained within the originally agreed time frame.\nFor its part Cisco says it has it has met all conditions for closing the deal.\n\u201cCisco is also seeking a court mandate that the agreement may not be terminated until the court resolves these matters, and an order from the Court requiring Acacia to close the transaction.\u00a0On January 7, 2021, Cisco was notified by SAMR that the agency has determined that Cisco\u2019s submission is \u2018sufficient to address the relevant competition concerns.\u2019\u201d\nLooking to augment its optical systems portfolio, Cisco brokered a deal for Acacia in 2019 for approximately $2.6 billion.\u00a0 Acacia develops, manufactures and sells high-speed coherent optical interconnect products that are designed to transform networks linking data centers, cloud and service providers.\nCisco stated at the time: \u201cThe acquisition of Acacia will allow us to build on the strength of our switching, routing and optical networking portfolio to address our customers' most demanding requirements."\nFor Cisco, one of the key drivers for making this deal was Acacia\u2019s coherent optical technology, which lets networking gear send optical signals over long distances. Acacia uses silicon photonics as the platform for integration of multiple photonic functions for coherent optics, Gartner wrote in a blog about the acquisition. \u201cLeveraging the advances in silicon photonics, each new generation of coherent optics products has enabled higher data transmission rates, lower power and higher performance than the one before,\u201d Gartner stated.