Slew of Galaxy products added, while Samsung adds iPhone 5.
A judge has allowed both and Apple and Samsung to add each firm's recent devices to a forthcoming trial.
The next major patent trial between the two technology giants is scheduled to start on March 31, 2014. It follows Apple's court case win in August that saw it being awarded $1.05 billion in damages. Samsung saw its request of having the judgement re-trailed denied.
Apple has now added the Samsung Galaxy Note 2, Galaxy S3 with Android 4.1, Galaxy Rugby Pro, Galaxy Tab 8.9 Wi-Fi and the Galaxy Tab 2 10.1 to its patent lawsuit.
Samsung, meanwhile, added the iPhone 5. One of its devices was removed from the lawsuit by Apple in the form of the Galaxy S3 Mini, providing the South Korean technology firm not actively selling it within the region.