limited to User Products, this provision addresses the fundamental problem.

% FIXME-LATER: link \href to USC 2301

The core of the User Product definition is a subdefinition of ``consumer

product'' taken verbatim from the Magnuson-Moss Warranty Act, a federal

consumer protection law in the USA found in 15~USC~\S2301: ``any tangible

personal property which is normally used for personal, family, or household

purposes.''  The United States has had three decades of experience of liberal

judicial and administrative interpretation of this definition in a manner

favorable to consumer rights.\footnote{The Magnuson-Moss consumer product

  definition itself has been influential in the USA and Canada, having been

  adopted in several state and provincial consumer protection laws.}

Ideally, this body of interpretation\footnote{The FSF, however, was very

  clear that incorporation of such legal interpretation was in no way

  intended work as a general choice of USA law for GPLv3.} will guide

interpretation of the consumer product subdefinition in GPLv3~\S6, and this

will hopefully provide a degree of legal certainty advantageous to device

manufacturers and downstream licensees alike.

One well-established interpretive principle under Magnuson-Moss is that

ambiguities are resolved in favor of coverage.  That is, in cases where

it is not clear whether a product falls under the definition of consumer

product, the product will be treated as a consumer product.\footnote{16

``normally used'' is understood to refer to the typical use of that type

of product, rather than a particular use by a particular buyer.

Products that are commonly used for personal as well as commercial

purposes are consumer products, even if the person invoking rights is a

commercial entity intending to use the product for commercial

interpreting Magnuson-Moss are in accord; see, e.g., \textit{Stroebner

Motors, Inc.~v.~Automobili Lamborghini S.p.A.}, 459 F.~Supp.2d 1028,

1033 (D.~Hawaii 2006).}  Even a small amount of ``normal'' personal use

is enough to cause an entire product line to be treated as a consumer

Industries, Inc.}, 213 U.S.P.Q.~702 (S.D.~Tex.~1981). In this case, the

court concluded that TRS-80 microcomputers were consumer products, where

such computers were designed and advertised for a variety of users,

including small businesses and schools, and had only recently been

We do not rely solely on the definition of consumer product, however,

because in the area of components of dwellings we consider the settled

interpretation under Magnuson-Moss underinclusive.  Depending on how

such components are manufactured or sold, they may or may not be

considered Magnuson-Moss consumer products.\footnote{Building materials

that are purchased directly by a consumer from a retailer, for improving

or modifying an existing dwelling, are consumer products under

Magnuson-Moss, but building materials that are integral component parts

of the structure of a dwelling at the time that the consumer buys the

dwelling are not consumer products. 16 C.F.R.~\S\S~700.1(c)--(f);

Federal Trade Commission, Final Action Concerning Review of

Interpretations of Magnuson-Moss Warranty Act, 64 Fed.~Reg.~19,700

(April 22, 1999); see also, e.g., \textit{McFadden}, 54

U.C.C.~Rep.~Serv.2d at 934.}  Therefore, we define User Products as a

superset of consumer products that also includes ``anything designed or

sold for incorporation into a dwelling.''

Although the User Products rule of Draft 3 reflects a special concern

for individual purchasers of devices, we wrote the rule to cover a

category of products, rather than categorizing users.  Discrimination

against organizational users has no place in a free software license.

Moreover, a rule that applied to individual use, rather than to use of

products normally used by individuals, would have too narrow an