As part of an insilico study, I generated virtual analogues based on the 3D structures of patented drugs and chemical compounds which were published in journals requiring copyright clearance. Some of the 3D structures of these drugs are also available in public databases of chemical compounds. I intend to publish the 2D structures of the generated analogues. Are there any copyright restrictions on the use of 3D structures of chemical compounds in insilico research ? Would it be a violation of patent or intellectual property copyrights of a patented drug compound if I make use of the 3D structure of the drug in insilico research ?
Thank you for any inputs.