The drawings section contains one or more pages of black and white drawings that illustrate the technical details of the invention. Drawings are not required for some types of inventions. For example, inventions related to a process or method of doing something do not require drawings.
Photographs are permited only when the invention is not capable of being illustrated by a black and white drawing or where the invention is shown more clearly in a photograph. Examples include cell cultures, histological tissue cross sections, animals, plants and crystalline structures. U.S. plant patents almost always have colour photographs.
Drawings must conform to drafting guidelines set by the patent office. They must be labeled clearly and provide enough detail for the reader to understand the invention’s design and use. In the case of U.S. patents, drawings follow the front page. The patent office selects one representative drawing to appear on the front page of the patent.
The specification is a written description of the invention. It includes a discussion of the related prior art (previously issued patents and other publications), a description of the drawings, how the invention solves a specific technical problem, and the preferred embodiment of the invention. The specification must describe the invention in sufficient detail so that anyone of ordinary skill in the same technical field can understand it.
Paragraphs located at end of the specification that define the scope of protection of a patent. The phrases “I claim” or “What is claimed” precedes the numbered claims. Patents must have at least one claim, but most usually have several and some hundreds of claims. The claims define the legal boundaries of the invention in the way a property deed defines the physical boundaries of an area of land.
The first claim in the patent above reads,
1. A portable electronic device, comprising:
a first housing;
a second housing coupled to the first housing and movable relative thereto between a closed position and an open position;
an antenna positioned in the first housing;
a low frequency shield coupled to the antenna and adapted to inhibit changes to the frequency response of the antenna when the portable electronic device is moved between the open position and the closed position; and
a high frequency chassis resonator coupled to the low frequency shield and adapted to increase high frequency sensitivity of the antenna