Samsung Electronics Co. has decided to pay $548 million to Apple Inc. this month in court-ordered damages. The agreement has marked that the first meaningful exchange of money from a roughly 5- year-long patent quarrel between the smartphone companies.

On Thursday, in a filing in US District Court in San Jose, Calif., Samsung said that it is going to pay the damages after the company’s latest appeal in the case got denied by a court. But, Samsung said that it could look for reimbursement from Apple on the basis of any future rulings from the US Supreme Court or the US Patent and Trademark Office.

Samsung was first sued by Apple in April 2011, when Apple said that its Korean rival had copied the appearance and feel of the iPhone. In 2012 a jury ruled in favor of the company and awarded $1.05 billion to it in damages.

After a number of other legal proceedings, Samsung decided to pay nearly 50% of that amount, represented by the present month’s payment. Both the companies will face off in the spring in the San Jose court over an extra $400 million from the original award.

The two companies also sued each other in courts worldwide after Apple first filed suit in 2011, but last year, they decided to drop all litigation outside the US. Besides this, Samsung has appealed a $120 million damage award for breaching Apple software patents from a second US trial in 2014.

Samsung spokeswoman Danielle Meister Cohen said, “While we’ve agreed to pay Apple, we remain confident that our products do not infringe on Apple’s design patents, and we will continue to take all appropriate measures within the legal system to protect our products and our intellectual property”.