Bloomberg reports that BlackBerry Partners Fund, a venture-capital firm backed by Research In Motion, plans to raise at least US$150 million to invest in mobile software developers in markets such as Brazil and India. The report notes that BlackBerry Partners announced plans in May for a US$100 million fund focused on China, though now the firm has decided instead to raise more capital for it and invest in a broader range of countries including Brazil, India and Russia. Check out our Focus report on BlackBerry Partners here.