Let me say something, a few years ago there were news by Russian Media that the J-11B was an illegal copy, i remember the attitude of many claiming the Russian media was lying and so and so, today Russia and China already solved the issue, in fact Sukhoi has already published the news that finally the issue is over see:
Moscow, November 12. Sukhoi Company will present its combat aircraft — Su-35 multifunctional fighter
and Su-32 (Su-34 export version) at the Airshow China-2012 international exhibition that opens on November 13 in the Chinese city of Zhuhai. Specialists and visitors of the exhibition will be able to learn the specifications and combat capabilities of the aircraft at the corporate stand of the United Aircraft Corporation (UAC) in the Russian exposition.
The civic project of Sukhoi — the Sukhoi Superjet 100 medium-range airliner will be presented at the air show for the fist time. The aircraft will be displayed in Yakutia Airlines livery on a static display for the general public and representatives of the regional airlines.
Cooperation with China in the field of military aviation develops successfully. The implementation of the program of Su-type licensed aircraft production is going on, as well as the delivery of spare parts for previously delivered aircraft. The framework established on the basis of long-term cooperation provides for the transition in the near future to a new level of cooperation on major projects
I do not know what all of you made a taboo the SU-35 negociations between China and Russia, specially when Pogyosian already spoke, they are in negociations undoutedly, the sale is not yet a fact; but as the J-11B issue negociations were taking place, now probably J-11B or J-15 are already legal aircraft in the Russian eyes or close to it since Sukhoi is claiming the license is still going on