Comment: Reverse onus is true of process patents (Score 3, Insightful) 205
This is absolutely correct for process patents. This is a requirements of the 1994 TRIPs (Trade-Related Aspects of Intellectual Property Rights) treaty. Here is the text of Article 34:
1. For the purposes of civil proceedings in respect of the infringement of the rights of the owner referred to in paragraph 1(b) of Article 28, if the subject matter of a patent is a process for obtaining a product, the judicial authorities shall have the authority to order the defendant to prove that the process to obtain an identical product is different from the patented process. Therefore, Members shall provide, in at least one of the following circumstances, that any identical product when produced without the consent of the patent owner shall, in the absence of proof to the contrary, be deemed to have been obtained by the patented process:
(a) if the product obtained by the patented process is new;
(b) if there is a substantial likelihood that the identical product was made by the process and the owner of the patent has been unable through reasonable efforts to determine the process actually used.
2. Any Member shall be free to provide that the burden of proof indicated in paragraph 1 shall be on the alleged infringer only if the condition referred to in subparagraph (a) is fulfilled or only if the condition referred to in subparagraph (b) is fulfilled.
3. In the adduction of proof to the contrary, the legitimate interests of defendants in protecting their manufacturing and business secrets shall be taken into account.
Whether this applies to software patents I am not sure (IANAL). As business process patents, it may, though it's not clear to me what the "product" would be. In any case, this is clearly the direction in which the law has been moving.
Ironically, by the way, negotiation that resulted in TRIPs was initiated by developing countries who found their economic development was being retarded by patents held by developed countries. Once the process started, however, it was hijacked by an unholy alliance of the pharmaceutical and entertainment industries. Poor countries were then effectively forced to join by developed countries, who withdrew from GATT leaving a choice between losing access to western markets and enacting onerous patent and copyright laws. Because of the impact on the cost of drugs for poor people, patents are a life-and-death issue. IP regulations, meanwhile, are expensive to implement, particularly in countries that lack the legal expertise:
the US Agency for International Development (USAID) now spends around a quarter of its annual budget on legal and regulatory training, including technical assistance from the US Patent and Trademark Office (USPTO), to help bring domestic legislation into compliance with TRIPs, including assessments of draft laws and recommendations regarding existing laws. (Christopher May and Susan K. Sell, Intellectual Property Rights: A Critical History, 2006