Orin Kerr at The Volokh Conspiracy explains why ElcomSoft’s ignorance of the law was an excuse in this instance.

Also, some are suggesting that jury nullification may have played a role in ElcomSoft’s acquittal. (“Jury nullification” refers to a jury’s refusal to find guilt under a law because they consider that law unjust.) An AP story says:

The defense argued that the program merely enabled owners of Adobe eBook Reader software to make copies of e-books for personal use. If an owner makes a backup copy of an e-book or transfers it to another device he owns, they argued, that is permitted under the “fair use” concept of copyright law.

Jury foreman Dennis Strader said the argument made a big impact on the jurors, who asked U.S. District Judge Ronald M. Whyte to clarify the “fair use” definition shortly after deliberations began.

“Under the eBook formats, you have no rights at all, and the jury had trouble with that concept,” said Strader.

Lisa Bowman at news.com reports that the jury has found ElcomSoft not guilty of criminally violating the DMCA.

It will be interesting to watch the reaction to this. Some people may try to read a lot into the verdict, but this is probably a mistake. Apparently, the verdict relied not on the drawbacks of the DMCA, and not on whether ElcomSoft’s actions were morally justified, but on the narrow question of what ElcomSoft knew about the DMCA when they sold their product. Not knowing the precise limits of the DMCA, ElcomSoft could not knowingly violate it.