Copper futures tilted lower in American trade, while the dollar index plumbed September 27 lows, following earlier data from China, the world's largest metals consumer, and the US.
As of 01:46 GMT, copper futures due in December fell 0.18% to $278.35 a pound, while the dollar index slipped 0.19% to 95.87 away from August 20 highs.
Earlier data from China, which accounts for 40% of global copper demand, showed consumer prices rose 2.5% as expected, the fastest such pace in seven months.
Producer prices rose 3.6 y/y, the slowest such pace in five months, and missing estimates of 3.7%.
Earlier US data showed industrial output rose 0.3% in September, slowing down from 0.4%, while the Capacity Utilization Rate stood at 78.1%, same as before and below estimates of 78.2%.