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The dispute illustrates how patent battles are becoming increasingly internationalized, with companies fighting in multiple jurisdictions.

At a time when startups selling chips or pet food have raised millions of dollars in funding, investors have shunned wearable tech companies. The fate of the sector hangs in the balance.
The seven-year-old health tech firm has hit a wall with its core surgery business. It is now opening up hospitals.
A lawsuit in the US threatens to eclipse a significant chunk of the overseas business done by India's biggest solar panel manufacturer, putting its investors at grave risk.