Seyed Amin Ghorashi Sarvestani pleaded guilty soon afterward, but changed circumstances now have encouraged him to challenge his 30-month prison sentence.
Since his plea, the federal government has approved for export to Iran the very products he was convicted of helping ship, his lawyers say.
Then federal prosecutors in New York told a judge after the sentencing hearing that they had mistakenly exaggerated the equipment's capabilities. The judge hasn't moved to change the sentence, though lawyers for both sides are continuing to press their arguments.
"I am neither an activist nor politically motivated," Sarvestani, 47, wrote from prison in an email to The Associated Press explaining his business of providing satellite-based Internet communications to Iran. "I am simply a citizen of the Earth who believe the Internet is a true miracle in mankind history."
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The Justice Department has stepped up enforcement of export restrictions in recent years, winning convictions in the illegal export of microwave amplifiers to China, defence missile batteries to Iran and military aircraft engines to Venezuela, among others.
"Knowing what you can and can't do is not as straightforward as you might think," he said.
In Sarvestani's case, there's no dispute that he broke the law, though he contended in an interview at prison that his crimes were more the result of negligence than intent.