Cisco and UMC-backed fabless semiconductor producer EnVerv has been acquired by semiconductor supplier Semtech.

Mobile game developer Kabam has acquired games studio TapZen, which had raised $18m in venture funding from Tencent and Zynga.

Cloud payment provider Bottomline Technologies has acquired the fraud detection and prevention company for $67m.

Alibaba has acquired a majority stake in News Corp-backed digital advertising platform AdChina for an undisclosed sum.

Novo-backed Tobira, which failed to go public last year, plans to merge with another pharmaceutical company, Regado Biosciences, whose stock has fallen to about $1.00.

Social network Twitter has reportedly entered talks to acquire the Times Internet-backed mobile marketing startup for up to $40m.

The restaurant listings service, which is majority-owned by Info Edge, is raising the funding in the aftermath of its acquisition of US-based rival Urbanspoon.

Diagnostic testing company Adaptive has bought Celgene-backed blood cancers test developer Sequenta in a deal backed by $94m of private equity money.