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United States and Foreign Patent Practice

This section of our WebSite is devoted to practice before the United States Patent and Trademark Office (USPTO) and well as other patents offices, such as the European Patent Office (EPO). Additionally, we look into other types of patent protection beyond the normal utility patent. As such, the papers listed in this section explore such topics as provisional patent applications, design patents and petty patents and utility models.

The Leahy-Smith America Invents Act - This paper discusses the Leahy-Smith America Invents Act (AIA) which was enacted in 2011. Many of the changes made by the new law do not come into effect until either September 16, 2012 or March 16, 2013 to give time for the adoption of new rules and required changes in procedure at the USPTO. The USPTO is still in the proposed rule-making phase, having published proposed new rules to implement many of the changes and received public comment on its proposals. This paper helps explain what is happening in terms of bringing the Leahy-Smith America Invents Act fully into play in the United States.

The AIA - A Summary in Chinese - This paper presents a summary of the Leahy-Smith America Invents Act in the Chinese Language.

The AIA - A Summary in Japanese - This paper presents a summary of the Leahy-Smith America Invents Act in the Japanese Language.

United States Patent Law and Practice with Special Reference to the Pharmaceutical and Biotechnology Industries - This paper, which comes from our Biotechnology section, provides an in depth look at patent prosecution practice in the U.S. and therefore we have also included a link to it here.

Protecting Inventions in Europe - at the European Patent Office (EPO).

EPO Practice - the Ladas & Parry Guide to European Patent Office Practice

US Patent Law Changes 1999-2000 - The 1999-2000 changes to the Patent Law provide for early publication and make many other changes.

Provisional Patent Applications - do you really want to file them?

Protecting Inventions Internationally - International protection of an invention has many pitfalls.

European Design Regime - The European Union adopts a new scheme for protecting designs.

European Design Regulation in Context - an overview of design protection in Europe.

The Patent Law of the People’s Republic of China - examine the different types of protection afforded inventions in China, and how patent applications should be drafted and prosecuted, opposition proceedings and the licensing and enforcement of patent rights in China.

Petty Patent (Utility Model) Protection - economical protection for useful articles or other “lower grade” inventions.


We at Ladas & Parry file many US patent applications annually. This area of our practice has experienced considerable growth during the past ten years. We also file foreign applications in even larger numbers through our own offices overseas and through carefully selected local counsel. We at Ladas & Parry are one of the largest filers of International Patent Applications filed in accordance with the Patent Cooperation Treaty. PCT International Applications tend to be tricky, but we have the experience necessary to deal with these applications efficiently.

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