Venus Remedies , a research-oriented global pharmaceutical company, on Wednesday said it has bagged a patent from the US patent office for Achnil, a once-a-day painkiller injection developed by Venus Medicine Research Centre, its R&D arm. The patent will remain in force till 2032. The stock immediately reacted positively. After remaining in the red for most part of the day, it jumped 8.3 per cent to end at ₹231.95.