Japanese customs officers intercepted about 12,000 counterfeit products headed into the country in the first half of this year. The number fell 14.3 percent from the same period last year.
The Finance Ministry says imports of fake brand goods were halted in 12,519 cases between January and June.
Of them, 9,131 cases, or 72.9 percent, were from China, down over 22 percent year on year.
The ministry believes coronavirus lockdowns in Shanghai may be a factor behind the decline, as toughened restrictions disrupted shipments to Japan.
By category, fake brand bags accounted for 27.6 percent. Clothing followed at 22.4 percent, and shoes at 13.7 percent.
Starting on October 1, imports of fake brand goods for personal use will also be subject to Japanese customs controls.